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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_lbl_0be40a2e54244c6dbd08694fd082ac37" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl_0be40a2e54244c6dbd08694fd082ac37" xml:lang="en-US">Property, plant and equipment - net</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredOfferingCosts" xlink:label="us-gaap_DeferredOfferingCosts" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredOfferingCosts" xlink:to="us-gaap_DeferredOfferingCosts_lbl_91cc2f63cf254d96a936c0d026b1dd6f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredOfferingCosts_lbl_91cc2f63cf254d96a936c0d026b1dd6f" xml:lang="en-US">Deferred offering costs</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecurityDeposit" xlink:to="us-gaap_SecurityDeposit_lbl_bb65b31bda7143a1a6300795ec5e3a60" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SecurityDeposit_lbl_bb65b31bda7143a1a6300795ec5e3a60" xml:lang="en-US">Security deposit</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SecurityDeposit" xlink:label="us-gaap_SecurityDeposit" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecurityDeposit" xlink:to="us-gaap_SecurityDeposit_lbl_11" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SecurityDeposit_lbl_11" xml:lang="en-US">[Security Deposit]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssets" xlink:label="us-gaap_OtherAssets" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssets" xlink:to="us-gaap_OtherAssets_lbl_11e6ca370f3649b698cf14155335483a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssets_lbl_11e6ca370f3649b698cf14155335483a" xml:lang="en-US">Total Other Assets</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl_f3309d54fb1842a3bdc69fa2ca433adc" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Assets_lbl_f3309d54fb1842a3bdc69fa2ca433adc" xml:lang="en-US">Total Assets</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="us-gaap_LiabilitiesCurrentAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract_lbl_72c0b4ea7f9f413fa246d0a4279f0048" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl_72c0b4ea7f9f413fa246d0a4279f0048" xml:lang="en-US">Current Liabilities:</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableRelatedPartiesCurrent" xlink:label="us-gaap_AccountsPayableRelatedPartiesCurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableRelatedPartiesCurrent" xlink:to="us-gaap_AccountsPayableRelatedPartiesCurrent_lbl_8c7b9bea6c7444b9b530d92316af0318" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableRelatedPartiesCurrent_lbl_8c7b9bea6c7444b9b530d92316af0318" xml:lang="en-US">Accounts payable - (including related party payables of approx. $1,511,000 and $1,504,000, respectively)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="us-gaap_AccruedLiabilitiesCurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedLiabilitiesCurrent" xlink:to="us-gaap_AccruedLiabilitiesCurrent_lbl_0defa519b1614555b9ebd89a69058ba1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl_0defa519b1614555b9ebd89a69058ba1" xml:lang="en-US">Accrued expenses - (including related party accruals of approx. $45,000 and $58,000, respectively)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedSalariesCurrent" xlink:label="us-gaap_AccruedSalariesCurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedSalariesCurrent" xlink:to="us-gaap_AccruedSalariesCurrent_lbl_b9c2db8cb3e24d16b8bde5fb38afaabd" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedSalariesCurrent_lbl_b9c2db8cb3e24d16b8bde5fb38afaabd" xml:lang="en-US">Accrued salaries and payroll taxes - (including related party accrued salaries of approx. $3,129,000 and $2,953,000, respectively)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NotesPayableRelatedPartiesClassifiedCurrent" xlink:label="us-gaap_NotesPayableRelatedPartiesClassifiedCurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesPayableRelatedPartiesClassifiedCurrent" xlink:to="us-gaap_NotesPayableRelatedPartiesClassifiedCurrent_lbl_99b94d7e7dcb448e9a3596fb8c29380e" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NotesPayableRelatedPartiesClassifiedCurrent_lbl_99b94d7e7dcb448e9a3596fb8c29380e" xml:lang="en-US">Note payable - related party</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="us-gaap_LiabilitiesCurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl_4600630a0c994e3699f7d74ccc0ab532" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrent_lbl_4600630a0c994e3699f7d74ccc0ab532" xml:lang="en-US">Total Current Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract" xlink:label="us-gaap_LiabilitiesNoncurrentAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesNoncurrentAbstract" xlink:to="us-gaap_LiabilitiesNoncurrentAbstract_lbl_f5d2f2302872461d8363c5ac75fd2039" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesNoncurrentAbstract_lbl_f5d2f2302872461d8363c5ac75fd2039" xml:lang="en-US">Other Liabilities:</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ConvertiblePreferredStockLiability" xlink:label="ipix_ConvertiblePreferredStockLiability" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConvertiblePreferredStockLiability" xlink:to="ipix_ConvertiblePreferredStockLiability_lbl_2db338fd3a004f2a93855ffcc9f6df94" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ConvertiblePreferredStockLiability_lbl_2db338fd3a004f2a93855ffcc9f6df94" xml:lang="en-US">Series B 5% convertible preferred stock liability at $1,080 stated value; 1,196 and 0 shares issued and outstanding at June 30, 2019 and 2018, respectively</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities_lbl_c7b2d309ad0a45a58c6d4015ebda1c74" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Liabilities_lbl_c7b2d309ad0a45a58c6d4015ebda1c74" xml:lang="en-US">Total Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="us-gaap_CommitmentsAndContingencies" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingencies" xlink:to="us-gaap_CommitmentsAndContingencies_lbl_34c1443f65224ae69bada80c3f5e7417" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingencies_lbl_34c1443f65224ae69bada80c3f5e7417" xml:lang="en-US">Commitments and contingencies (Note 8)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="us-gaap_StockholdersEquityAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityAbstract" xlink:to="us-gaap_StockholdersEquityAbstract_lbl_622bbadf4d1b43c48f435ec79ce84360" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityAbstract_lbl_622bbadf4d1b43c48f435ec79ce84360" xml:lang="en-US">Stockholders' Deficiency</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="us-gaap_PreferredStockValue" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockValue" xlink:to="us-gaap_PreferredStockValue_lbl_52c92c131672468fb070be7baa4e054f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockValue_lbl_52c92c131672468fb070be7baa4e054f" xml:lang="en-US">Preferred stock, $0.001 par value, 10,000,000 designated shares, no shares issued and outstanding</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapital" xlink:to="us-gaap_AdditionalPaidInCapital_lbl_e31ae42f44ef45f184e182fe0a8dec38" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapital_lbl_e31ae42f44ef45f184e182fe0a8dec38" xml:lang="en-US">Additional paid-in capital</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_lbl_efbeed96b0ef4bab8a546e8bd3257bcf" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl_efbeed96b0ef4bab8a546e8bd3257bcf" xml:lang="en-US">Accumulated deficit</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockValue" xlink:label="us-gaap_TreasuryStockValue" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockValue" xlink:to="us-gaap_TreasuryStockValue_lbl_2493ed71f4bf4abea2153bc12277510a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TreasuryStockValue_lbl_2493ed71f4bf4abea2153bc12277510a" xml:lang="en-US">Treasury Stock, at cost (228,218 shares and 0 shares as of June 30, 2019 and 2018, respectively)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl_7328feb4f30e49198351bc68e5d8985b" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_StockholdersEquity_lbl_7328feb4f30e49198351bc68e5d8985b" xml:lang="en-US">Total Stockholders' Deficiency</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl_29" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquity_lbl_29" xml:lang="en-US">[Stockholders' Equity Attributable to Parent]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl_a468ac7217214839a3fcac1014c1c329" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl_a468ac7217214839a3fcac1014c1c329" xml:lang="en-US">Total Liabilities and Stockholders' Deficiency</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl_30" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl_30" xml:lang="en-US">[Liabilities and Equity]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockValue" xlink:to="us-gaap_CommonStockValue_lbl_1358e3a5d49542e9a18661959ea5fc31" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockValue_lbl_1358e3a5d49542e9a18661959ea5fc31" xml:lang="en-US">Common Stock value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract_lbl_fd3e5eaf62e4493b92b0a45408adbbf2" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl_fd3e5eaf62e4493b92b0a45408adbbf2" xml:lang="en-US">Current Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent" xlink:label="us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent" xlink:to="us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent_lbl_faa4060adc2848cb99c16d2bfa0d14dc" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent_lbl_faa4060adc2848cb99c16d2bfa0d14dc" xml:lang="en-US">Related party payables</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_RelatedPartyExpenses" xlink:label="ipix_RelatedPartyExpenses" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_RelatedPartyExpenses" xlink:to="ipix_RelatedPartyExpenses_lbl_f143eb3b4fb4417292d79b81416a90da" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_RelatedPartyExpenses_lbl_f143eb3b4fb4417292d79b81416a90da" xml:lang="en-US">Related party expenses</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_RelatedPartyAccruedSalaries" xlink:label="ipix_RelatedPartyAccruedSalaries" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_RelatedPartyAccruedSalaries" xlink:to="ipix_RelatedPartyAccruedSalaries_lbl_23b4041965854de7a7f471a6118cf8bc" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_RelatedPartyAccruedSalaries_lbl_23b4041965854de7a7f471a6118cf8bc" xml:lang="en-US">Related party accrued salaries</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesNoncurrentAbstract" xlink:to="us-gaap_LiabilitiesNoncurrentAbstract_lbl_f5e24cbfe7454ac5ba92a77deafbf3a1" xlink:type="arc" />
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    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ConvertiblePreferredStockLiabilityStatedValue" xlink:label="ipix_ConvertiblePreferredStockLiabilityStatedValue" />
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityAbstract" xlink:to="us-gaap_StockholdersEquityAbstract_lbl_ce6361fcdd2348909c50da7b4cba2749" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockholdersEquityAbstract_lbl_ce6361fcdd2348909c50da7b4cba2749" xml:lang="en-US">Stockholders' Deficiency</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockParOrStatedValuePerShare" xlink:to="us-gaap_PreferredStockParOrStatedValuePerShare_lbl_60eaf8c1f65c43528e04516f9d3ab0d9" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl_60eaf8c1f65c43528e04516f9d3ab0d9" xml:lang="en-US">Preferred stock, par value</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="us-gaap_PreferredStockSharesIssued" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesIssued" xlink:to="us-gaap_PreferredStockSharesIssued_lbl_3bc1be4aeee140d382c4192351435095" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesIssued_lbl_3bc1be4aeee140d382c4192351435095" xml:lang="en-US">Preferred stock, shares issued</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="us-gaap_PreferredStockSharesOutstanding" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesOutstanding" xlink:to="us-gaap_PreferredStockSharesOutstanding_lbl_d75b5c7c0570405882b457af254951e4" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl_d75b5c7c0570405882b457af254951e4" xml:lang="en-US">Preferred stock, shares outstanding</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="us-gaap_PreferredStockSharesAuthorized" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesAuthorized" xlink:to="us-gaap_PreferredStockSharesAuthorized_lbl_24335fdc12b4452d8f51dda8f134e9c3" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl_24335fdc12b4452d8f51dda8f134e9c3" xml:lang="en-US">Preferred stock, shares designated</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockShares" xlink:label="us-gaap_TreasuryStockShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockShares" xlink:to="us-gaap_TreasuryStockShares_lbl_2b5c59141ade4241a4f3474408904205" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TreasuryStockShares_lbl_2b5c59141ade4241a4f3474408904205" xml:lang="en-US">Treasury Stock Shares</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="us-gaap_CommonStockSharesIssued" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_lbl_950f1a04704e4b0394799396c52f7390" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesIssued_lbl_950f1a04704e4b0394799396c52f7390" xml:lang="en-US">Common Stock, shares issued</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="us-gaap_CommonStockSharesOutstanding" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesOutstanding" xlink:to="us-gaap_CommonStockSharesOutstanding_lbl_77c6c2079ff2453e835f91eab12e5a54" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl_77c6c2079ff2453e835f91eab12e5a54" xml:lang="en-US">Common Stock, shares outstanding</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="us-gaap_CommonStockSharesAuthorized" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesAuthorized" xlink:to="us-gaap_CommonStockSharesAuthorized_lbl_75c54b4bb7af46a580df0b458bdb5fba" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl_75c54b4bb7af46a580df0b458bdb5fba" xml:lang="en-US">Common Stock, shares authorized</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare_lbl_ee07f6114def4ffc8ead111c08519f0e" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl_ee07f6114def4ffc8ead111c08519f0e" xml:lang="en-US">Common stock , par value</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="us-gaap_IncomeStatementAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract_lbl_3daea1ccd7964e88a03534c7c7f7e4b1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementAbstract_lbl_3daea1ccd7964e88a03534c7c7f7e4b1" xml:lang="en-US">CONSOLIDATED STATEMENTS OF OPERATIONS</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="us-gaap_Revenues" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_Revenues_lbl_d744fc6cc78147059c8e9a64e6625b9a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Revenues_lbl_d744fc6cc78147059c8e9a64e6625b9a" xml:lang="en-US">Revenues</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="us-gaap_OperatingExpensesAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpensesAbstract" xlink:to="us-gaap_OperatingExpensesAbstract_lbl_f2e5d75b65cb4fb7bb41e050a7b0b4a0" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpensesAbstract_lbl_f2e5d75b65cb4fb7bb41e050a7b0b4a0" xml:lang="en-US">Operating expenses:</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="us-gaap_ResearchAndDevelopmentExpense" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentExpense" xlink:to="us-gaap_ResearchAndDevelopmentExpense_lbl_05027a4daf5c4172bd05e416e34bfc44" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl_05027a4daf5c4172bd05e416e34bfc44" xml:lang="en-US">Research and development expenses</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="us-gaap_GeneralAndAdministrativeExpense" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralAndAdministrativeExpense" xlink:to="us-gaap_GeneralAndAdministrativeExpense_lbl_b3f520e4a89a430589b9809463404876" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl_b3f520e4a89a430589b9809463404876" xml:lang="en-US">General and administrative expenses</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LaborAndRelatedExpense" xlink:label="us-gaap_LaborAndRelatedExpense" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LaborAndRelatedExpense_lbl_7fd1f46ee0184d07987f28f24943ab29" xml:lang="en-US">Officers' payroll and payroll tax expenses</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProfessionalFees_lbl_edc83d2804e5418295682d793e107c2e" xml:lang="en-US">Professional fees</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="us-gaap_OperatingExpenses" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpenses_lbl_98a622020b614c01a80c753238135aae" xml:lang="en-US">Total operating expenses</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingIncomeLoss_lbl_3a855fe7ea294865aed3e6497c844bd0" xml:lang="en-US">Loss from operations</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherIncomeAndExpensesAbstract_lbl_1c6b0bb82d1642ab885966c1414d0c71" xml:lang="en-US">Other expenses</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestmentIncomeInterest" xlink:label="us-gaap_InvestmentIncomeInterest" />
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpense_lbl_3aafe5e5142148b39cc1f68777330368" xlink:type="arc" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestExpense_lbl_13" xml:lang="en-US">[Interest Expense]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ChangeInFairValueOfPreferredStock" xlink:label="ipix_ChangeInFairValueOfPreferredStock" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl_50a4a5a07b3d46af85ccf61c92775798" xml:lang="en-US">Financing costs</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="us-gaap_NonoperatingIncomeExpense" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpense" xlink:to="us-gaap_NonoperatingIncomeExpense_lbl_03fcfa3b5f7c4142bc80230f1b6fe471" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl_03fcfa3b5f7c4142bc80230f1b6fe471" xml:lang="en-US">Total other expenses</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl_a8354b604a0d4703a58c4c6fbf5dfc4a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl_a8354b604a0d4703a58c4c6fbf5dfc4a" xml:lang="en-US">Loss before provision for income taxes</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxExpenseBenefit_lbl_46cb098d5ff347bcb1422131d5228097" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl_46cb098d5ff347bcb1422131d5228097" xml:lang="en-US">Provision for income taxes</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl_8db29303f6a347f095f288adf827a1f9" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLoss_lbl_8db29303f6a347f095f288adf827a1f9" xml:lang="en-US">Net loss</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasicAndDiluted" xlink:label="us-gaap_EarningsPerShareBasicAndDiluted" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasicAndDiluted" xlink:to="us-gaap_EarningsPerShareBasicAndDiluted_lbl_390ebd858ced4d4c87133c9cbc268331" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareBasicAndDiluted_lbl_390ebd858ced4d4c87133c9cbc268331" xml:lang="en-US">Basic and diluted loss per share attributable to common stockholders</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" xlink:label="us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" xlink:to="us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_lbl_2e1de97cb64947b1b1a426bff180a6b1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_lbl_2e1de97cb64947b1b1a426bff180a6b1" xml:lang="en-US">Weighted average number of common shares</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfStockholdersEquityAbstract" xlink:to="us-gaap_StatementOfStockholdersEquityAbstract_lbl_af50f8bcd4014d4fa6666d9b7376f8cc" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl_af50f8bcd4014d4fa6666d9b7376f8cc" xml:lang="en-US">CONSOLIDATED STATEMENTS OF STOCKHOLDER'S EQUITY</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="us-gaap_StatementEquityComponentsAxis" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementEquityComponentsAxis" xlink:to="us-gaap_StatementEquityComponentsAxis_lbl_7bf08dc105144a2ca25dbe15e85439b6" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl_7bf08dc105144a2ca25dbe15e85439b6" xml:lang="en-US">Equity Components [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_CommonStockAMember" xlink:label="ipix_CommonStockAMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_CommonStockAMember" xlink:to="ipix_CommonStockAMember_lbl_da2f62f640444ae68fb778299c9c2e9c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_CommonStockAMember_lbl_da2f62f640444ae68fb778299c9c2e9c" xml:lang="en-US">Common Stock A [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_CommonStockBMember" xlink:label="ipix_CommonStockBMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_CommonStockBMember" xlink:to="ipix_CommonStockBMember_lbl_762ad88ac1924fd8bfee0d4478d93e2d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_CommonStockBMember_lbl_762ad88ac1924fd8bfee0d4478d93e2d" xml:lang="en-US">Common Stock B [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="us-gaap_AdditionalPaidInCapitalMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapitalMember" xlink:to="us-gaap_AdditionalPaidInCapitalMember_lbl_8625ebb6b78f4c62b6cfac22c5fc73a9" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl_8625ebb6b78f4c62b6cfac22c5fc73a9" xml:lang="en-US">Additional Paid-in Capital [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="us-gaap_RetainedEarningsMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsMember" xlink:to="us-gaap_RetainedEarningsMember_lbl_0d9a569dbb9a4b07a0eff592302b2543" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetainedEarningsMember_lbl_0d9a569dbb9a4b07a0eff592302b2543" xml:lang="en-US">Accumulated Deficit [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockMember" xlink:label="us-gaap_TreasuryStockMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockMember" xlink:to="us-gaap_TreasuryStockMember_lbl_04941d959a0041099aceec03326e0911" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TreasuryStockMember_lbl_04941d959a0041099aceec03326e0911" xml:lang="en-US">Treasury Stock [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssued" xlink:to="us-gaap_SharesIssued_lbl_aec4f2d2c9a74f9dbfd29e622d18032d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_SharesIssued_lbl_aec4f2d2c9a74f9dbfd29e622d18032d" xml:lang="en-US">Balance, shares</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesIssued" xlink:label="us-gaap_SharesIssued" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssued" xlink:to="us-gaap_SharesIssued_lbl_2" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharesIssued_lbl_2" xml:lang="en-US">[Shares, Issued]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl_b393464e38d74012a6a63c8369764ecc" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_StockholdersEquity_lbl_b393464e38d74012a6a63c8369764ecc" xml:lang="en-US">Balance, amount</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesSoldToAspireCapitalUnder2015AgreementAt074094RangeShares" xlink:label="ipix_SharesSoldToAspireCapitalUnder2015AgreementAt074094RangeShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesSoldToAspireCapitalUnder2015AgreementAt074094RangeShares" xlink:to="ipix_SharesSoldToAspireCapitalUnder2015AgreementAt074094RangeShares_lbl_d07362ae812b4f53b157254818b38b7e" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesSoldToAspireCapitalUnder2015AgreementAt074094RangeShares_lbl_d07362ae812b4f53b157254818b38b7e" xml:lang="en-US">Shares sold to Aspire Capital under 2015 Agreement at $0.74 - $0.94 range, Shares</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="us-gaap_ProfitLoss" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfitLoss" xlink:to="us-gaap_ProfitLoss_lbl_6250cf48df574a3280d2c5b3cb2a4248" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProfitLoss_lbl_6250cf48df574a3280d2c5b3cb2a4248" xml:lang="en-US">Net Income (Loss)</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesSoldToAspireCapitalUnder2015AgreementAt074094RangeAmount" xlink:label="ipix_SharesSoldToAspireCapitalUnder2015AgreementAt074094RangeAmount" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesSoldToAspireCapitalUnder2015AgreementAt074094RangeAmount" xlink:to="ipix_SharesSoldToAspireCapitalUnder2015AgreementAt074094RangeAmount_lbl_1f0faa84026447d5b29dbc5cffc9945c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesSoldToAspireCapitalUnder2015AgreementAt074094RangeAmount_lbl_1f0faa84026447d5b29dbc5cffc9945c" xml:lang="en-US">Shares sold to Aspire Capital under 2015 Agreement at $0.74 - $0.94 range, Amount</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesSoldToAspireCapitalUnder2017AgreementAt025076RangeShares" xlink:label="ipix_SharesSoldToAspireCapitalUnder2017AgreementAt025076RangeShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesSoldToAspireCapitalUnder2017AgreementAt025076RangeShares" xlink:to="ipix_SharesSoldToAspireCapitalUnder2017AgreementAt025076RangeShares_lbl_1824f41872f1461c8f1ce8c91620842a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesSoldToAspireCapitalUnder2017AgreementAt025076RangeShares_lbl_1824f41872f1461c8f1ce8c91620842a" xml:lang="en-US">Shares sold to Aspire Capital under 2017 Agreement at $0.25 - $0.76 range,Shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesSoldToAspireCapitalUnder2017AgreementAt025076RangeAmount" xlink:label="ipix_SharesSoldToAspireCapitalUnder2017AgreementAt025076RangeAmount" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesSoldToAspireCapitalUnder2017AgreementAt025076RangeAmount" xlink:to="ipix_SharesSoldToAspireCapitalUnder2017AgreementAt025076RangeAmount_lbl_fdcc580483b64336b137719e4e66da02" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesSoldToAspireCapitalUnder2017AgreementAt025076RangeAmount_lbl_fdcc580483b64336b137719e4e66da02" xml:lang="en-US">Shares sold to Aspire Capital under 2017 Agreement at $0.25 - $0.76 range, Amount</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesSoldToAspireCapitalUnder2018AgreementAtADiscountedPurchasePriceOf029PerShareNetShares" xlink:label="ipix_SharesSoldToAspireCapitalUnder2018AgreementAtADiscountedPurchasePriceOf029PerShareNetShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesSoldToAspireCapitalUnder2018AgreementAtADiscountedPurchasePriceOf029PerShareNetShares" xlink:to="ipix_SharesSoldToAspireCapitalUnder2018AgreementAtADiscountedPurchasePriceOf029PerShareNetShares_lbl_f404c6a61b4f4295af4eecc5f0b6a803" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesSoldToAspireCapitalUnder2018AgreementAtADiscountedPurchasePriceOf029PerShareNetShares_lbl_f404c6a61b4f4295af4eecc5f0b6a803" xml:lang="en-US">Shares sold to Aspire Capital under 2018 Agreement at a discounted purchase price of $0.29 per share, net, Shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesSoldToAspireCapitalUnder2018AgreementAtADiscountedPurchasePriceOf029PerShareNetAmount" xlink:label="ipix_SharesSoldToAspireCapitalUnder2018AgreementAtADiscountedPurchasePriceOf029PerShareNetAmount" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesSoldToAspireCapitalUnder2018AgreementAtADiscountedPurchasePriceOf029PerShareNetAmount" xlink:to="ipix_SharesSoldToAspireCapitalUnder2018AgreementAtADiscountedPurchasePriceOf029PerShareNetAmount_lbl_90f78585d91c4666937098c47a6e7c40" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesSoldToAspireCapitalUnder2018AgreementAtADiscountedPurchasePriceOf029PerShareNetAmount_lbl_90f78585d91c4666937098c47a6e7c40" xml:lang="en-US">Shares sold to Aspire Capital under 2018 Agreement at a discounted purchase price of $0.29 per share, net, Amount</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesIssuedAsCommitmentFee962017At0715Shares" xlink:label="ipix_SharesIssuedAsCommitmentFee962017At0715Shares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesIssuedAsCommitmentFee962017At0715Shares" xlink:to="ipix_SharesIssuedAsCommitmentFee962017At0715Shares_lbl_5cb4b5a5896e4032b4fbc45754eabca3" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesIssuedAsCommitmentFee962017At0715Shares_lbl_5cb4b5a5896e4032b4fbc45754eabca3" xml:lang="en-US">Shares issued as commitment fee, 9/6/2017 at $0.715, Shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesIssuedAsCommitmentFee962017At0715Amount" xlink:label="ipix_SharesIssuedAsCommitmentFee962017At0715Amount" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesIssuedAsCommitmentFee962017At0715Amount" xlink:to="ipix_SharesIssuedAsCommitmentFee962017At0715Amount_lbl_1af698b1b54e40d884d888ea1d22b586" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesIssuedAsCommitmentFee962017At0715Amount_lbl_1af698b1b54e40d884d888ea1d22b586" xml:lang="en-US">Shares issued as commitment fee, 9/6/2017 at $0.715, Amount</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesAndWarrantsIssuedAsCommitmentFeeShares" xlink:label="ipix_SharesAndWarrantsIssuedAsCommitmentFeeShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesAndWarrantsIssuedAsCommitmentFeeShares" xlink:to="ipix_SharesAndWarrantsIssuedAsCommitmentFeeShares_lbl_79442e91cf324bf498c20e0edaeb7f7d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesAndWarrantsIssuedAsCommitmentFeeShares_lbl_79442e91cf324bf498c20e0edaeb7f7d" xml:lang="en-US">Shares and warrants issued as commitment fee, Shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesAndWarrantsIssuedAsCommitmentFeeAmount" xlink:label="ipix_SharesAndWarrantsIssuedAsCommitmentFeeAmount" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesAndWarrantsIssuedAsCommitmentFeeAmount" xlink:to="ipix_SharesAndWarrantsIssuedAsCommitmentFeeAmount_lbl_1a27fda2f1844d22abc60c6c99b34a14" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesAndWarrantsIssuedAsCommitmentFeeAmount_lbl_1a27fda2f1844d22abc60c6c99b34a14" xml:lang="en-US">Shares and warrants issued as commitment fee, Amount</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_OfferingCost" xlink:label="ipix_OfferingCost" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_OfferingCost" xlink:to="ipix_OfferingCost_lbl_93eb5579ec6e433eab3417f99eec5a26" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_OfferingCost_lbl_93eb5579ec6e433eab3417f99eec5a26" xml:lang="en-US">Offering cost</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesIssuedToOfficerAsEquityAwardsAt0705140" xlink:label="ipix_SharesIssuedToOfficerAsEquityAwardsAt0705140" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesIssuedToOfficerAsEquityAwardsAt0705140" xlink:to="ipix_SharesIssuedToOfficerAsEquityAwardsAt0705140_lbl_b77795c45eb84531ab31e699789eecbe" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesIssuedToOfficerAsEquityAwardsAt0705140_lbl_b77795c45eb84531ab31e699789eecbe" xml:lang="en-US">Shares issued to officer as equity awards at $0.705 - 1.40</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesIssuedToEmployeesForServicesAt0705137" xlink:label="ipix_SharesIssuedToEmployeesForServicesAt0705137" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesIssuedToEmployeesForServicesAt0705137" xlink:to="ipix_SharesIssuedToEmployeesForServicesAt0705137_lbl_99fc7f37189c446e9a707f6d1f611fec" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesIssuedToEmployeesForServicesAt0705137_lbl_99fc7f37189c446e9a707f6d1f611fec" xml:lang="en-US">Shares issued to employees for services at $0.705 - $1.37</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesIssuedToConsultantForServicesAt043Shares" xlink:label="ipix_SharesIssuedToConsultantForServicesAt043Shares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesIssuedToConsultantForServicesAt043Shares" xlink:to="ipix_SharesIssuedToConsultantForServicesAt043Shares_lbl_96fe2444f3f947549edd2d3a10d5ea8a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesIssuedToConsultantForServicesAt043Shares_lbl_96fe2444f3f947549edd2d3a10d5ea8a" xml:lang="en-US">Shares issued to consultant for services at $0.43, Shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesIssuedToConsultantForServicesAt043Amount" xlink:label="ipix_SharesIssuedToConsultantForServicesAt043Amount" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesIssuedToConsultantForServicesAt043Amount" xlink:to="ipix_SharesIssuedToConsultantForServicesAt043Amount_lbl_f322f290fda142daa2d90fdf7e547070" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesIssuedToConsultantForServicesAt043Amount_lbl_f322f290fda142daa2d90fdf7e547070" xml:lang="en-US">Shares issued to consultant for services at $0.43, Amount</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_StockOptionsIssuedToOfficerAsEquityAwardsAt139" xlink:label="ipix_StockOptionsIssuedToOfficerAsEquityAwardsAt139" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_StockOptionsIssuedToOfficerAsEquityAwardsAt139" xlink:to="ipix_StockOptionsIssuedToOfficerAsEquityAwardsAt139_lbl_03f693353d514de8af22fe3908b5878b" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_StockOptionsIssuedToOfficerAsEquityAwardsAt139_lbl_03f693353d514de8af22fe3908b5878b" xml:lang="en-US">Stock options issued to officer as equity awards at $1.39</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_StockOptionsIssuedToEmployeesForServicesAt0705137" xlink:label="ipix_StockOptionsIssuedToEmployeesForServicesAt0705137" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_StockOptionsIssuedToEmployeesForServicesAt0705137" xlink:to="ipix_StockOptionsIssuedToEmployeesForServicesAt0705137_lbl_08093a01bad9439188855a29988b5923" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_StockOptionsIssuedToEmployeesForServicesAt0705137_lbl_08093a01bad9439188855a29988b5923" xml:lang="en-US">Stock options issued to employees for services at $0.705 - $1.37</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_StockOptionsIssuedToConsultantForServicesAt015073" xlink:label="ipix_StockOptionsIssuedToConsultantForServicesAt015073" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_StockOptionsIssuedToConsultantForServicesAt015073" xlink:to="ipix_StockOptionsIssuedToConsultantForServicesAt015073_lbl_47bfe7da651b48c0b1107670b627f1aa" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_StockOptionsIssuedToConsultantForServicesAt015073_lbl_47bfe7da651b48c0b1107670b627f1aa" xml:lang="en-US">Stock options issued to consultant for services at $0.15 - $0.73</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_IssuanceOfVestedSharesToOfficerAndEmployeesShares" xlink:label="ipix_IssuanceOfVestedSharesToOfficerAndEmployeesShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_IssuanceOfVestedSharesToOfficerAndEmployeesShares" xlink:to="ipix_IssuanceOfVestedSharesToOfficerAndEmployeesShares_lbl_90c20075c4104791a1b3c0bcd4aa00fb" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_IssuanceOfVestedSharesToOfficerAndEmployeesShares_lbl_90c20075c4104791a1b3c0bcd4aa00fb" xml:lang="en-US">Issuance of vested shares to Officer and employees, Shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_CancellationOfAllTreasurySharesShares" xlink:label="ipix_CancellationOfAllTreasurySharesShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_CancellationOfAllTreasurySharesShares" xlink:to="ipix_CancellationOfAllTreasurySharesShares_lbl_00312cc612a1408a899c512faa2e4ccc" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_CancellationOfAllTreasurySharesShares_lbl_00312cc612a1408a899c512faa2e4ccc" xml:lang="en-US">Cancellation of all treasury shares, Shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_CancellationOfAllTreasurySharesAmount" xlink:label="ipix_CancellationOfAllTreasurySharesAmount" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_CancellationOfAllTreasurySharesAmount" xlink:to="ipix_CancellationOfAllTreasurySharesAmount_lbl_2d44044f71af426095c779a0a5fbb9c0" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_CancellationOfAllTreasurySharesAmount_lbl_2d44044f71af426095c779a0a5fbb9c0" xml:lang="en-US">Cancellation of all treasury shares, Amount</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesIssuedToOfficerAsEquityAwardsAt0398To0705" xlink:label="ipix_SharesIssuedToOfficerAsEquityAwardsAt0398To0705" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesIssuedToOfficerAsEquityAwardsAt0398To0705" xlink:to="ipix_SharesIssuedToOfficerAsEquityAwardsAt0398To0705_lbl_3e58af543c4a4f749b1a22adc7f6304c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesIssuedToOfficerAsEquityAwardsAt0398To0705_lbl_3e58af543c4a4f749b1a22adc7f6304c" xml:lang="en-US">Shares issued to officer as equity awards at $0.398 to $0.705</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesIssuedToConsultantForServicesAt084138" xlink:label="ipix_SharesIssuedToConsultantForServicesAt084138" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesIssuedToConsultantForServicesAt084138" xlink:to="ipix_SharesIssuedToConsultantForServicesAt084138_lbl_1773a0f39950403e91fcfff7bf1b1e16" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesIssuedToConsultantForServicesAt084138_lbl_1773a0f39950403e91fcfff7bf1b1e16" xml:lang="en-US">Shares issued to consultant for services at $0.84 - $1.38</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_StockOptionsIssuedToEmployeeForServicesAt0398137" xlink:label="ipix_StockOptionsIssuedToEmployeeForServicesAt0398137" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_StockOptionsIssuedToEmployeeForServicesAt0398137" xlink:to="ipix_StockOptionsIssuedToEmployeeForServicesAt0398137_lbl_f72a2f985f1c4526af7083e35473d3b9" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_StockOptionsIssuedToEmployeeForServicesAt0398137_lbl_f72a2f985f1c4526af7083e35473d3b9" xml:lang="en-US">Stock options issued to employee for services at $0.398 - $1.37</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_StockOptionsIssuedToConsultantForServicesAt043073" xlink:label="ipix_StockOptionsIssuedToConsultantForServicesAt043073" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_StockOptionsIssuedToConsultantForServicesAt043073" xlink:to="ipix_StockOptionsIssuedToConsultantForServicesAt043073_lbl_6d62750d2cf042be91a3572397a4ddf7" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_StockOptionsIssuedToConsultantForServicesAt043073_lbl_6d62750d2cf042be91a3572397a4ddf7" xml:lang="en-US">Stock options issued to consultant for services at $0.43 - $0.73</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_IssuanceOfVestedSharesToOfficerAndConsultantShares" xlink:label="ipix_IssuanceOfVestedSharesToOfficerAndConsultantShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_IssuanceOfVestedSharesToOfficerAndConsultantShares" xlink:to="ipix_IssuanceOfVestedSharesToOfficerAndConsultantShares_lbl_d12df284b54244bf9a3c693247a8b68e" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_IssuanceOfVestedSharesToOfficerAndConsultantShares_lbl_d12df284b54244bf9a3c693247a8b68e" xml:lang="en-US">Issuance of vested shares to Officer, and Consultant, Shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesIssuedToEmployeeForServicesAt0398137" xlink:label="ipix_SharesIssuedToEmployeeForServicesAt0398137" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesIssuedToEmployeeForServicesAt0398137" xlink:to="ipix_SharesIssuedToEmployeeForServicesAt0398137_lbl_cfc58e0c8cec4138be25e7b2beb2dd90" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesIssuedToEmployeeForServicesAt0398137_lbl_cfc58e0c8cec4138be25e7b2beb2dd90" xml:lang="en-US">Shares issued to employee for services at $0.398 - $1.37</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_StockOptionsIssuedToOfficerAsEquityAwardsAt0398To0705" xlink:label="ipix_StockOptionsIssuedToOfficerAsEquityAwardsAt0398To0705" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_StockOptionsIssuedToOfficerAsEquityAwardsAt0398To0705" xlink:to="ipix_StockOptionsIssuedToOfficerAsEquityAwardsAt0398To0705_lbl_7f35e941c0c84385b8d3347064272d81" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_StockOptionsIssuedToOfficerAsEquityAwardsAt0398To0705_lbl_7f35e941c0c84385b8d3347064272d81" xml:lang="en-US">Stock options issued to officer as equity awards at $0.398 to $0.705</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_CancellationOfDebtForThePurchaseOf909090SharesOfCommonStockClassBShares" xlink:label="ipix_CancellationOfDebtForThePurchaseOf909090SharesOfCommonStockClassBShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_CancellationOfDebtForThePurchaseOf909090SharesOfCommonStockClassBShares" xlink:to="ipix_CancellationOfDebtForThePurchaseOf909090SharesOfCommonStockClassBShares_lbl_5320ce5924104cf5aecc392380326f4f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_CancellationOfDebtForThePurchaseOf909090SharesOfCommonStockClassBShares_lbl_5320ce5924104cf5aecc392380326f4f" xml:lang="en-US">Cancellation of debt for the purchase of 909,090 shares of Common Stock Class B, Shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_IssuanceOfSharesForTaxPurposesAsTreasurySharesShares" xlink:label="ipix_IssuanceOfSharesForTaxPurposesAsTreasurySharesShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_IssuanceOfSharesForTaxPurposesAsTreasurySharesShares" xlink:to="ipix_IssuanceOfSharesForTaxPurposesAsTreasurySharesShares_lbl_d39e3ecf8f1e4406b0c52f30b4c12bb0" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_IssuanceOfSharesForTaxPurposesAsTreasurySharesShares_lbl_d39e3ecf8f1e4406b0c52f30b4c12bb0" xml:lang="en-US">Issuance of shares for tax purposes as Treasury Shares, Shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ConversionOfPreferredStocksToCommonStockShares" xlink:label="ipix_ConversionOfPreferredStocksToCommonStockShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConversionOfPreferredStocksToCommonStockShares" xlink:to="ipix_ConversionOfPreferredStocksToCommonStockShares_lbl_e4d4b9f6430f47a788b0e8997ff06123" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ConversionOfPreferredStocksToCommonStockShares_lbl_e4d4b9f6430f47a788b0e8997ff06123" xml:lang="en-US">Conversion of preferred stocks to common stock, Shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_CancellationOfDebtForThePurchaseOf909090SharesOfCommonStockClassBAmount" xlink:label="ipix_CancellationOfDebtForThePurchaseOf909090SharesOfCommonStockClassBAmount" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_CancellationOfDebtForThePurchaseOf909090SharesOfCommonStockClassBAmount" xlink:to="ipix_CancellationOfDebtForThePurchaseOf909090SharesOfCommonStockClassBAmount_lbl_3a3164c4d18e4541b8ad26f587f4dba9" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_CancellationOfDebtForThePurchaseOf909090SharesOfCommonStockClassBAmount_lbl_3a3164c4d18e4541b8ad26f587f4dba9" xml:lang="en-US">Cancellation of debt for the purchase of 909,090 shares of Common Stock Class B, Amount</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AllocatingWarrantsProportionOfValueExercisedToPrefStockLiability" xlink:label="ipix_AllocatingWarrantsProportionOfValueExercisedToPrefStockLiability" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AllocatingWarrantsProportionOfValueExercisedToPrefStockLiability" xlink:to="ipix_AllocatingWarrantsProportionOfValueExercisedToPrefStockLiability_lbl_8c4adcfde8bb4145a25b4bbfada86ad6" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AllocatingWarrantsProportionOfValueExercisedToPrefStockLiability_lbl_8c4adcfde8bb4145a25b4bbfada86ad6" xml:lang="en-US">Allocating warrants (proportion of value exercised) to Pref Stock Liability</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_IssuanceOfSharesForTaxPurposesAsTreasurySharesAmount" xlink:label="ipix_IssuanceOfSharesForTaxPurposesAsTreasurySharesAmount" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_IssuanceOfSharesForTaxPurposesAsTreasurySharesAmount" xlink:to="ipix_IssuanceOfSharesForTaxPurposesAsTreasurySharesAmount_lbl_e7b54f63868e48c8b6c2583c10e77953" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_IssuanceOfSharesForTaxPurposesAsTreasurySharesAmount_lbl_e7b54f63868e48c8b6c2583c10e77953" xml:lang="en-US">Issuance of shares for tax purposes as Treasury Shares, Amount</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ToRecordUnderlyingSeries1Series2AndSeries3WarrantsAttachedTo2000SharesSeriesBPreferredStock" xlink:label="ipix_ToRecordUnderlyingSeries1Series2AndSeries3WarrantsAttachedTo2000SharesSeriesBPreferredStock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ToRecordUnderlyingSeries1Series2AndSeries3WarrantsAttachedTo2000SharesSeriesBPreferredStock" xlink:to="ipix_ToRecordUnderlyingSeries1Series2AndSeries3WarrantsAttachedTo2000SharesSeriesBPreferredStock_lbl_cf810fc80a994a37b8dd99f43de90dc8" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ToRecordUnderlyingSeries1Series2AndSeries3WarrantsAttachedTo2000SharesSeriesBPreferredStock_lbl_cf810fc80a994a37b8dd99f43de90dc8" xml:lang="en-US">To record underlying Series 1, Series 2 and Series 3 Warrants attached to 2,000 shares Series B Preferred Stock</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ReversalOfTheStockBasedCompensationRelatedToUnvestedOptionsAndSharesForEmployeeFrom711812312018" xlink:label="ipix_ReversalOfTheStockBasedCompensationRelatedToUnvestedOptionsAndSharesForEmployeeFrom711812312018" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ReversalOfTheStockBasedCompensationRelatedToUnvestedOptionsAndSharesForEmployeeFrom711812312018" xlink:to="ipix_ReversalOfTheStockBasedCompensationRelatedToUnvestedOptionsAndSharesForEmployeeFrom711812312018_lbl_d09b30c98fe24e93bbbbd778852dd8ac" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ReversalOfTheStockBasedCompensationRelatedToUnvestedOptionsAndSharesForEmployeeFrom711812312018_lbl_d09b30c98fe24e93bbbbd778852dd8ac" xml:lang="en-US">Reversal of the stock based compensation related to unvested options and shares for employee from 7.1.18-12.31.2018</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ToRecordBeneficialConversionFeatureOfSeriesBPreferredStockWarrantsDiscounts" xlink:label="ipix_ToRecordBeneficialConversionFeatureOfSeriesBPreferredStockWarrantsDiscounts" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ToRecordBeneficialConversionFeatureOfSeriesBPreferredStockWarrantsDiscounts" xlink:to="ipix_ToRecordBeneficialConversionFeatureOfSeriesBPreferredStockWarrantsDiscounts_lbl_47231c0cc8df44dc96a81c930b92d9a4" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ToRecordBeneficialConversionFeatureOfSeriesBPreferredStockWarrantsDiscounts_lbl_47231c0cc8df44dc96a81c930b92d9a4" xml:lang="en-US">To record beneficial conversion feature of Series B preferred stock &amp; warrants discounts</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ConversionOfPreferredStocksToCommonStockAmount" xlink:label="ipix_ConversionOfPreferredStocksToCommonStockAmount" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConversionOfPreferredStocksToCommonStockAmount" xlink:to="ipix_ConversionOfPreferredStocksToCommonStockAmount_lbl_e399da03032844d3ae71c233e9aa1784" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ConversionOfPreferredStocksToCommonStockAmount_lbl_e399da03032844d3ae71c233e9aa1784" xml:lang="en-US">Conversion of preferred stocks to common stock, Amount</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ToRecordIssuanceOf2500WarrantsSeriesBPreferredStockPer592019Modification" xlink:label="ipix_ToRecordIssuanceOf2500WarrantsSeriesBPreferredStockPer592019Modification" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ToRecordIssuanceOf2500WarrantsSeriesBPreferredStockPer592019Modification" xlink:to="ipix_ToRecordIssuanceOf2500WarrantsSeriesBPreferredStockPer592019Modification_lbl_fdf54d87d4e54936af67b0d49acb8e35" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ToRecordIssuanceOf2500WarrantsSeriesBPreferredStockPer592019Modification_lbl_fdf54d87d4e54936af67b0d49acb8e35" xml:lang="en-US">To record issuance of 2,500 warrants Series B Preferred Stock per 5.9.2019 Modification</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_DividendPaidByIssuanceOfPreferredStockForQ2123118" xlink:label="ipix_DividendPaidByIssuanceOfPreferredStockForQ2123118" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_DividendPaidByIssuanceOfPreferredStockForQ2123118" xlink:to="ipix_DividendPaidByIssuanceOfPreferredStockForQ2123118_lbl_c3bdd6c423304d3abe775843ca18303b" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_DividendPaidByIssuanceOfPreferredStockForQ2123118_lbl_c3bdd6c423304d3abe775843ca18303b" xml:lang="en-US">Dividend paid by issuance of preferred stock for Q2-12/31/18</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_WithholdingAndPurchaseOfTreasurySharesFromVestedSharesIssuedAtCostShares" xlink:label="ipix_WithholdingAndPurchaseOfTreasurySharesFromVestedSharesIssuedAtCostShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_WithholdingAndPurchaseOfTreasurySharesFromVestedSharesIssuedAtCostShares" xlink:to="ipix_WithholdingAndPurchaseOfTreasurySharesFromVestedSharesIssuedAtCostShares_lbl_bb90d2abe74c4dc49c5b10c1e409a24d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_WithholdingAndPurchaseOfTreasurySharesFromVestedSharesIssuedAtCostShares_lbl_bb90d2abe74c4dc49c5b10c1e409a24d" xml:lang="en-US">Withholding and Purchase of 305,792 treasury shares from vested shares issued - at cost, shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_WithholdingAndPurchaseOfTreasurySharesFromVestedSharesIssuedAtCostAmount" xlink:label="ipix_WithholdingAndPurchaseOfTreasurySharesFromVestedSharesIssuedAtCostAmount" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_WithholdingAndPurchaseOfTreasurySharesFromVestedSharesIssuedAtCostAmount" xlink:to="ipix_WithholdingAndPurchaseOfTreasurySharesFromVestedSharesIssuedAtCostAmount_lbl_dbc30f8e62ac4ae7903f07c99488b66a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_WithholdingAndPurchaseOfTreasurySharesFromVestedSharesIssuedAtCostAmount_lbl_dbc30f8e62ac4ae7903f07c99488b66a" xml:lang="en-US">Withholding and Purchase of 305,792 treasury shares from vested shares issued - at cost, amount</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssued" xlink:to="us-gaap_SharesIssued_lbl_fc7efd0291504ffeb8c6e672abf21d53" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_SharesIssued_lbl_fc7efd0291504ffeb8c6e672abf21d53" xml:lang="en-US">Balance, shares</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl_846b48de5bf748c189bf750546d2d0ff" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_StockholdersEquity_lbl_846b48de5bf748c189bf750546d2d0ff" xml:lang="en-US">Balance, amount</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="us-gaap_StatementOfCashFlowsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl_49b971b4a3e8407097a775488dc7ee6a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl_49b971b4a3e8407097a775488dc7ee6a" xml:lang="en-US">CONSOLIDATED STATEMENTS OF CASH FLOWS</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl_aef3b1ad73864e148a492ac232627c22" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl_aef3b1ad73864e148a492ac232627c22" xml:lang="en-US">CASH FLOWS FROM OPERATING ACTIVITIES</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl_2205864c6cbf4ce2a52965481b8feb39" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetIncomeLoss_lbl_2205864c6cbf4ce2a52965481b8feb39" xml:lang="en-US">Net loss</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl_d8c29eb832454e9485272d9fa453861d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl_d8c29eb832454e9485272d9fa453861d" xml:lang="en-US">Adjustments to reconcile net loss to net cash used in operating activities:</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="us-gaap_ShareBasedCompensation" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensation" xlink:to="us-gaap_ShareBasedCompensation_lbl_2522916fc8f8402f98e779fa427cc71c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensation_lbl_2522916fc8f8402f98e779fa427cc71c" xml:lang="en-US">Common stock and stock options issued as employee compensation and payment for services</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="us-gaap_AmortizationOfIntangibleAssets" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfIntangibleAssets" xlink:to="us-gaap_AmortizationOfIntangibleAssets_lbl_be09e3a919db49679e940a8e514d4d8a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl_be09e3a919db49679e940a8e514d4d8a" xml:lang="en-US">Amortization of patent costs Basic and diluted loss per share</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsFinitelived" xlink:label="us-gaap_ImpairmentOfIntangibleAssetsFinitelived" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairmentOfIntangibleAssetsFinitelived" xlink:to="us-gaap_ImpairmentOfIntangibleAssetsFinitelived_lbl_4a34ba1bdae14e1e8beb2ffff6519dec" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ImpairmentOfIntangibleAssetsFinitelived_lbl_4a34ba1bdae14e1e8beb2ffff6519dec" xml:lang="en-US">Patent write off</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Depreciation" xlink:label="us-gaap_Depreciation" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Depreciation" xlink:to="us-gaap_Depreciation_lbl_07f48323189a47c3ba792fc43b088891" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Depreciation_lbl_07f48323189a47c3ba792fc43b088891" xml:lang="en-US">Depreciation of equipment</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets" xlink:label="us-gaap_GainLossOnDispositionOfAssets" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnDispositionOfAssets" xlink:to="us-gaap_GainLossOnDispositionOfAssets_lbl_59ceb60cc7eb489e966ef016c5cf4e57" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl_59ceb60cc7eb489e966ef016c5cf4e57" xml:lang="en-US">(Gain) Loss on disposal of equipment</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpense_lbl_89ea5a04c8114745bc36652a94048730" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InterestExpense_lbl_89ea5a04c8114745bc36652a94048730" xml:lang="en-US">Interest expense-preferred stock</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WriteOffOfDeferredDebtIssuanceCost" xlink:label="us-gaap_WriteOffOfDeferredDebtIssuanceCost" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WriteOffOfDeferredDebtIssuanceCost" xlink:to="us-gaap_WriteOffOfDeferredDebtIssuanceCost_lbl_df27c656d8664e4e946d1fb1679e1473" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WriteOffOfDeferredDebtIssuanceCost_lbl_df27c656d8664e4e946d1fb1679e1473" xml:lang="en-US">Deferred financing costs write off</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ModificationOfSeriesBConvertiblePreferredStockTerms" xlink:label="ipix_ModificationOfSeriesBConvertiblePreferredStockTerms" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ModificationOfSeriesBConvertiblePreferredStockTerms" xlink:to="ipix_ModificationOfSeriesBConvertiblePreferredStockTerms_lbl_9a38e02d34fd4e06b134da19a968df2b" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ModificationOfSeriesBConvertiblePreferredStockTerms_lbl_9a38e02d34fd4e06b134da19a968df2b" xml:lang="en-US">Modification of Series B convertible preferred stock terms</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ChangesInFairValueOfPreferredStock" xlink:to="ipix_ChangesInFairValueOfPreferredStock_lbl_abe5632ab5d44e29a4dc90c34f1c7e32" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_ChangesInFairValueOfPreferredStock_lbl_abe5632ab5d44e29a4dc90c34f1c7e32" xml:lang="en-US">Change in fair value of preferred stock</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ChangesInFairValueOfPreferredStock" xlink:label="ipix_ChangesInFairValueOfPreferredStock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ChangesInFairValueOfPreferredStock" xlink:to="ipix_ChangesInFairValueOfPreferredStock_lbl_13" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ChangesInFairValueOfPreferredStock_lbl_13" xml:lang="en-US">[Change in fair value of preferred stock]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl_8a91cb4c36ee42f987d56e0fb35c5949" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl_8a91cb4c36ee42f987d56e0fb35c5949" xml:lang="en-US">Changes in operating assets and liabilities:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:to="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl_e5b6e5f75d65434d8f84cc7423e698fc" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl_e5b6e5f75d65434d8f84cc7423e698fc" xml:lang="en-US">Prepaid expenses and other current assets</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:to="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl_15" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl_15" xml:lang="en-US">[Increase (Decrease) in Prepaid Expense and Other Assets]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayable" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayable_lbl_d2458fab21a3427bac2027b57364ebba" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl_d2458fab21a3427bac2027b57364ebba" xml:lang="en-US">Accounts payable</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:to="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl_6d34d966bf7f44b6b4e62308b15dab74" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl_6d34d966bf7f44b6b4e62308b15dab74" xml:lang="en-US">Accrued expenses</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities" xlink:to="us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_lbl_38e877b1c2ce4e9691466b7d30dfdddd" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_lbl_38e877b1c2ce4e9691466b7d30dfdddd" xml:lang="en-US">Accrued officers' salaries and payroll taxes</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl_4d3980fc256c4e089a31d1900f0a2ea6" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl_4d3980fc256c4e089a31d1900f0a2ea6" xml:lang="en-US">Net cash used in operating activities</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl_7771b70451f44e3aa6e3806b1bba7433" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl_7771b70451f44e3aa6e3806b1bba7433" xml:lang="en-US">CASH FLOWS FROM INVESTING ACTIVITIES:</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:to="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl_d39aaef00b5249dd8af01c18e1ecfcc3" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl_d39aaef00b5249dd8af01c18e1ecfcc3" xml:lang="en-US">Sales proceeds of property, plant and equipment</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_PatentCosts" xlink:label="ipix_PatentCosts" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_PatentCosts" xlink:to="ipix_PatentCosts_lbl_3191d8e232de4328998011fbbb1bbfaa" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_PatentCosts_lbl_3191d8e232de4328998011fbbb1bbfaa" xml:lang="en-US">Patent costs</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl_9acaeba6cc564beebc68dee6863dbd6c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl_9acaeba6cc564beebc68dee6863dbd6c" xml:lang="en-US">Net cash used in investing activities</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl_64b8ce0f60c846fe87403ae96eb622f7" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl_64b8ce0f60c846fe87403ae96eb622f7" xml:lang="en-US">CASH FLOWS FROM FINANCING ACTIVITIES:</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOrSaleOfEquity" xlink:label="us-gaap_ProceedsFromIssuanceOrSaleOfEquity" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOrSaleOfEquity" xlink:to="us-gaap_ProceedsFromIssuanceOrSaleOfEquity_lbl_3924262e0bd24a9198b3472e9126feb8" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOrSaleOfEquity_lbl_3924262e0bd24a9198b3472e9126feb8" xml:lang="en-US">Sale of common stock, net of offering costs</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockValueAcquiredCostMethod" xlink:to="us-gaap_TreasuryStockValueAcquiredCostMethod_lbl_42de8795d05040488a55d882707141d0" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod_lbl_42de8795d05040488a55d882707141d0" xml:lang="en-US">Purchase of treasury stock</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ProceedsFromIssuanceOfSeriesBPreferredStocksNetOfFinancingCosts" xlink:label="ipix_ProceedsFromIssuanceOfSeriesBPreferredStocksNetOfFinancingCosts" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ProceedsFromIssuanceOfSeriesBPreferredStocksNetOfFinancingCosts" xlink:to="ipix_ProceedsFromIssuanceOfSeriesBPreferredStocksNetOfFinancingCosts_lbl_fcd24577cce442f487169eb739528f65" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ProceedsFromIssuanceOfSeriesBPreferredStocksNetOfFinancingCosts_lbl_fcd24577cce442f487169eb739528f65" xml:lang="en-US">Proceeds from issuance of Series B Preferred stocks, net of financing costs</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromWarrantExercises" xlink:label="us-gaap_ProceedsFromWarrantExercises" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromWarrantExercises" xlink:to="us-gaap_ProceedsFromWarrantExercises_lbl_4e81417edea74b5d90b27c6487e55f00" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromWarrantExercises_lbl_4e81417edea74b5d90b27c6487e55f00" xml:lang="en-US">Proceeds from exercise of warrants</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl_eb690688b5e94ad0a8670b8e1adfc08a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl_eb690688b5e94ad0a8670b8e1adfc08a" xml:lang="en-US">Net cash provided by financing activities</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl_afa185148dbd4d9aaef51439e45f15b1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl_afa185148dbd4d9aaef51439e45f15b1" xml:lang="en-US">NET DECREASE IN CASH</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Cash" xlink:to="us-gaap_Cash_lbl_6c369775c7a2476f831c28b6ad2fefb5" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_Cash_lbl_6c369775c7a2476f831c28b6ad2fefb5" xml:lang="en-US">CASH, BEGINNING OF YEAR</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Cash" xlink:to="us-gaap_Cash_lbl_a9c801cc8ce3444b883a7d493582c638" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_Cash_lbl_a9c801cc8ce3444b883a7d493582c638" xml:lang="en-US">CASH, END OF YEAR</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalCashFlowInformationAbstract" xlink:to="us-gaap_SupplementalCashFlowInformationAbstract_lbl_458799dcdff4421fa30a1bf642882a8a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl_458799dcdff4421fa30a1bf642882a8a" xml:lang="en-US">SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestPaid" xlink:label="us-gaap_InterestPaid" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaid" xlink:to="us-gaap_InterestPaid_lbl_bc524889c7734621b0cdbd75cbab0b56" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPaid_lbl_bc524889c7734621b0cdbd75cbab0b56" xml:lang="en-US">Cash paid for interest</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxesPaid" xlink:label="us-gaap_IncomeTaxesPaid" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxesPaid" xlink:to="us-gaap_IncomeTaxesPaid_lbl_3e8feaad2d044a36b1b94ae8e4bc7850" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxesPaid_lbl_3e8feaad2d044a36b1b94ae8e4bc7850" xml:lang="en-US">Cash paid for income taxes</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoncashInvestingAndFinancingItemsAbstract" xlink:label="us-gaap_NoncashInvestingAndFinancingItemsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncashInvestingAndFinancingItemsAbstract" xlink:to="us-gaap_NoncashInvestingAndFinancingItemsAbstract_lbl_94a622302cec42eeb468f0064688f4d5" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncashInvestingAndFinancingItemsAbstract_lbl_94a622302cec42eeb468f0064688f4d5" xml:lang="en-US">SUPPLEMENTAL DISCLOSURE OF NON-CASH FLOW INVESTING AND FINANCING ACTIVITIES</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_PurchaseOfTreasuryStockOffsetBySubscriptionReceivable" xlink:label="ipix_PurchaseOfTreasuryStockOffsetBySubscriptionReceivable" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_PurchaseOfTreasuryStockOffsetBySubscriptionReceivable" xlink:to="ipix_PurchaseOfTreasuryStockOffsetBySubscriptionReceivable_lbl_3b589dc048a14ee497de68b0d64d2563" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_PurchaseOfTreasuryStockOffsetBySubscriptionReceivable_lbl_3b589dc048a14ee497de68b0d64d2563" xml:lang="en-US">Purchase of treasury stock offset by subscription receivable</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AllocatingWarrantsProportionOfValueExercisedToPreferredStockLiability" xlink:label="ipix_AllocatingWarrantsProportionOfValueExercisedToPreferredStockLiability" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AllocatingWarrantsProportionOfValueExercisedToPreferredStockLiability" xlink:to="ipix_AllocatingWarrantsProportionOfValueExercisedToPreferredStockLiability_lbl_b3004478f57642b98b62bc3643788f30" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AllocatingWarrantsProportionOfValueExercisedToPreferredStockLiability_lbl_b3004478f57642b98b62bc3643788f30" xml:lang="en-US">Allocating warrants (proportion of value exercised) to preferred stock liability</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_InitialWarrantValuation" xlink:label="ipix_InitialWarrantValuation" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_InitialWarrantValuation" xlink:to="ipix_InitialWarrantValuation_lbl_8f0a2816b66a4981ad250623c94faa8c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_InitialWarrantValuation_lbl_8f0a2816b66a4981ad250623c94faa8c" xml:lang="en-US">Initial warrant valuation</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_BeneficialConversionFeaturesOnPreferredStockAndWarrantDiscounts" xlink:label="ipix_BeneficialConversionFeaturesOnPreferredStockAndWarrantDiscounts" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_BeneficialConversionFeaturesOnPreferredStockAndWarrantDiscounts" xlink:to="ipix_BeneficialConversionFeaturesOnPreferredStockAndWarrantDiscounts_lbl_d36a4e1e4b1f42b591eeff61f1424796" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_BeneficialConversionFeaturesOnPreferredStockAndWarrantDiscounts_lbl_d36a4e1e4b1f42b591eeff61f1424796" xml:lang="en-US">Beneficial conversion features on preferred stock and warrant discounts</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_IssuanceOf2500WarrantsForPreferredStockModification" xlink:label="ipix_IssuanceOf2500WarrantsForPreferredStockModification" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_IssuanceOf2500WarrantsForPreferredStockModification" xlink:to="ipix_IssuanceOf2500WarrantsForPreferredStockModification_lbl_a09786db2350422caa01195d2d0e3a61" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_IssuanceOf2500WarrantsForPreferredStockModification_lbl_a09786db2350422caa01195d2d0e3a61" xml:lang="en-US">Issuance of 2,500 warrants for preferred stock modification</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_StockDividendPaidByIssuanceOfPreferredStock" xlink:label="ipix_StockDividendPaidByIssuanceOfPreferredStock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_StockDividendPaidByIssuanceOfPreferredStock" xlink:to="ipix_StockDividendPaidByIssuanceOfPreferredStock_lbl_001f7ca2a58f452f8c5097e23c0c3ce1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_StockDividendPaidByIssuanceOfPreferredStock_lbl_001f7ca2a58f452f8c5097e23c0c3ce1" xml:lang="en-US">Stock dividend paid by issuance of preferred stock</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ConversionOfSeriesBConvertiblePreferredStockToCommonStock" xlink:label="ipix_ConversionOfSeriesBConvertiblePreferredStockToCommonStock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConversionOfSeriesBConvertiblePreferredStockToCommonStock" xlink:to="ipix_ConversionOfSeriesBConvertiblePreferredStockToCommonStock_lbl_b0870e64e9bb4fba9ae7f9a5483410b0" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ConversionOfSeriesBConvertiblePreferredStockToCommonStock_lbl_b0870e64e9bb4fba9ae7f9a5483410b0" xml:lang="en-US">Conversion of Series B Convertible Preferred stock to Common stock</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_CancellationOfShareholderDebtForThePurchaseOf909090SharesOfCommonStockClassBShares" xlink:label="ipix_CancellationOfShareholderDebtForThePurchaseOf909090SharesOfCommonStockClassBShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_CancellationOfShareholderDebtForThePurchaseOf909090SharesOfCommonStockClassBShares" xlink:to="ipix_CancellationOfShareholderDebtForThePurchaseOf909090SharesOfCommonStockClassBShares_lbl_92e9d78698a14b949f0ce2f20f5f90c0" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_CancellationOfShareholderDebtForThePurchaseOf909090SharesOfCommonStockClassBShares_lbl_92e9d78698a14b949f0ce2f20f5f90c0" xml:lang="en-US">Cancellation of shareholder debt for the purchase of 909,090 shares of Common Stock Class B shares</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="us-gaap_AccountingPoliciesAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_AccountingPoliciesAbstract_lbl_e810e0c775154f1a97466f8002e19025" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl_e810e0c775154f1a97466f8002e19025" xml:lang="en-US">Basis of Presentation and Nature of Operations</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock" xlink:label="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock" xlink:to="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl_cd9638d46ef84ca6b301f2c833862655" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl_cd9638d46ef84ca6b301f2c833862655" xml:lang="en-US">Note 1. Basis of Presentation and Nature of Operations</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RisksAndUncertaintiesAbstract" xlink:label="us-gaap_RisksAndUncertaintiesAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RisksAndUncertaintiesAbstract" xlink:to="us-gaap_RisksAndUncertaintiesAbstract_lbl_499648b0d711469facb0b49449b09375" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RisksAndUncertaintiesAbstract_lbl_499648b0d711469facb0b49449b09375" xml:lang="en-US">Going Concern and Liquidity</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubstantialDoubtAboutGoingConcernTextBlock" xlink:label="us-gaap_SubstantialDoubtAboutGoingConcernTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubstantialDoubtAboutGoingConcernTextBlock" xlink:to="us-gaap_SubstantialDoubtAboutGoingConcernTextBlock_lbl_9c2cee0dfce84ae2b4a0a1fe6b8ee67c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubstantialDoubtAboutGoingConcernTextBlock_lbl_9c2cee0dfce84ae2b4a0a1fe6b8ee67c" xml:lang="en-US">Note 2. Going Concern and Liquidity</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SignificantAccountingPoliciesTextBlock" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SignificantAccountingPoliciesTextBlock" xlink:to="us-gaap_SignificantAccountingPoliciesTextBlock_lbl_c015eb8ed6c14241a3560af1ce29c366" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl_c015eb8ed6c14241a3560af1ce29c366" xml:lang="en-US">Note 3. Significant Accounting Policies and Recent Accounting Pronouncements</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AirlineRelatedInventoryNetAbstract" xlink:label="us-gaap_AirlineRelatedInventoryNetAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AirlineRelatedInventoryNetAbstract" xlink:to="us-gaap_AirlineRelatedInventoryNetAbstract_lbl_eb38ef4c9b6f410ebf69f744535ebe82" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AirlineRelatedInventoryNetAbstract_lbl_eb38ef4c9b6f410ebf69f744535ebe82" xml:lang="en-US">Patents, net</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsDisclosureTextBlock" xlink:label="us-gaap_IntangibleAssetsDisclosureTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IntangibleAssetsDisclosureTextBlock" xlink:to="us-gaap_IntangibleAssetsDisclosureTextBlock_lbl_3a228dd252fa4c88b1f2b4b82735e599" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IntangibleAssetsDisclosureTextBlock_lbl_3a228dd252fa4c88b1f2b4b82735e599" xml:lang="en-US">Note 4. Patents, net</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:label="us-gaap_PropertyPlantAndEquipmentAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentAbstract" xlink:to="us-gaap_PropertyPlantAndEquipmentAbstract_lbl_718606572ddc42bd91587c11172f0b31" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentAbstract_lbl_718606572ddc42bd91587c11172f0b31" xml:lang="en-US">Property, plant and equipment, net</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl_7c17344eb3284550aae99a8b45908364" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl_7c17344eb3284550aae99a8b45908364" xml:lang="en-US">Note 5. Property, plant and equipment, net</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AccruedExpensesRelatedPartiesAndOtherAbstract" xlink:label="ipix_AccruedExpensesRelatedPartiesAndOtherAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AccruedExpensesRelatedPartiesAndOtherAbstract" xlink:to="ipix_AccruedExpensesRelatedPartiesAndOtherAbstract_lbl_d8ebd61176ae4c0d82bccfceca8f519c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AccruedExpensesRelatedPartiesAndOtherAbstract_lbl_d8ebd61176ae4c0d82bccfceca8f519c" xml:lang="en-US">Accrued Expenses - Related Parties and Other</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AccruedExpensesRelatedPartiesAndOtherDisclosureTextBlock" xlink:label="ipix_AccruedExpensesRelatedPartiesAndOtherDisclosureTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AccruedExpensesRelatedPartiesAndOtherDisclosureTextBlock" xlink:to="ipix_AccruedExpensesRelatedPartiesAndOtherDisclosureTextBlock_lbl_fc633d3751de4a57ae0b828634f4f92a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AccruedExpensesRelatedPartiesAndOtherDisclosureTextBlock_lbl_fc633d3751de4a57ae0b828634f4f92a" xml:lang="en-US">6. Accrued Expenses - Related Parties and Other</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract" xlink:label="us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract" xlink:to="us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract_lbl_fc2dcd634c874a4493960794285b9123" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedLiabilitiesAndOtherLiabilitiesAbstract_lbl_fc2dcd634c874a4493960794285b9123" xml:lang="en-US">Accrued Salaries and Payroll Taxes - Related Parties And Other</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CompensationRelatedCostsGeneralTextBlock" xlink:label="us-gaap_CompensationRelatedCostsGeneralTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CompensationRelatedCostsGeneralTextBlock" xlink:to="us-gaap_CompensationRelatedCostsGeneralTextBlock_lbl_71563acab3924bc794f1d5602d3ce8ca" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CompensationRelatedCostsGeneralTextBlock_lbl_71563acab3924bc794f1d5602d3ce8ca" xml:lang="en-US">Note 7. Accrued Salaries and Payroll Taxes - Related Parties And Other</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl_7a9bcc1242c6453c96e5728d8ebd48d6" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl_7a9bcc1242c6453c96e5728d8ebd48d6" xml:lang="en-US">Commitments and Contingencies</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl_4690fbe1995a444da0814283e2cd80e4" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl_4690fbe1995a444da0814283e2cd80e4" xml:lang="en-US">Note 8. Commitments and Contingencies</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsAbstract" xlink:label="us-gaap_RelatedPartyTransactionsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionsAbstract" xlink:to="us-gaap_RelatedPartyTransactionsAbstract_lbl_e2e8ca5d55a644229f6ba7ae7ed2f55f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionsAbstract_lbl_e2e8ca5d55a644229f6ba7ae7ed2f55f" xml:lang="en-US">Related Party Transactions</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:to="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl_4dd6cc9192e14a3f9c86f2d6cca4ab68" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl_4dd6cc9192e14a3f9c86f2d6cca4ab68" xml:lang="en-US">Note 9. Related Party Transactions</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConvertibleLongtermNotesPayableCurrentAndNoncurrentAbstract" xlink:label="us-gaap_ConvertibleLongtermNotesPayableCurrentAndNoncurrentAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertibleLongtermNotesPayableCurrentAndNoncurrentAbstract" xlink:to="us-gaap_ConvertibleLongtermNotesPayableCurrentAndNoncurrentAbstract_lbl_beba926853ea4310a53a835f389f9829" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConvertibleLongtermNotesPayableCurrentAndNoncurrentAbstract_lbl_beba926853ea4310a53a835f389f9829" xml:lang="en-US">Convertible Note Payable - Related Party</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ConvertibleNotePayableRelatedPartyTextBlock" xlink:label="ipix_ConvertibleNotePayableRelatedPartyTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConvertibleNotePayableRelatedPartyTextBlock" xlink:to="ipix_ConvertibleNotePayableRelatedPartyTextBlock_lbl_46bd0d3ba18246869452c74e1058be57" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ConvertibleNotePayableRelatedPartyTextBlock_lbl_46bd0d3ba18246869452c74e1058be57" xml:lang="en-US">Note 10. Convertible Note Payable - Related Party</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageRateDomesticDepositLiabilitiesAbstract" xlink:label="us-gaap_WeightedAverageRateDomesticDepositLiabilitiesAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageRateDomesticDepositLiabilitiesAbstract" xlink:to="us-gaap_WeightedAverageRateDomesticDepositLiabilitiesAbstract_lbl_36a9502c193d4a779f51d58fb198540f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageRateDomesticDepositLiabilitiesAbstract_lbl_36a9502c193d4a779f51d58fb198540f" xml:lang="en-US">Weighted Average Shares Outstanding</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_WeightedAverageSharesOutstandingTextBlock" xlink:label="ipix_WeightedAverageSharesOutstandingTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_WeightedAverageSharesOutstandingTextBlock" xlink:to="ipix_WeightedAverageSharesOutstandingTextBlock_lbl_359cf3c123e94a19ae6c3eebc95f3041" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_WeightedAverageSharesOutstandingTextBlock_lbl_359cf3c123e94a19ae6c3eebc95f3041" xml:lang="en-US">Note 11. Weighted Average Shares Outstanding</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EnvironmentalRemediationObligationsAbstract" xlink:label="us-gaap_EnvironmentalRemediationObligationsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EnvironmentalRemediationObligationsAbstract" xlink:to="us-gaap_EnvironmentalRemediationObligationsAbstract_lbl_d792977814f24a8186029dff475af900" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EnvironmentalRemediationObligationsAbstract_lbl_d792977814f24a8186029dff475af900" xml:lang="en-US">Equity Incentive Plans, Stock-Based Compensation, Exercise of Options and Warrants Outstanding</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:to="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl_1c763c716830468bb194a7d1c8bf8f78" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl_1c763c716830468bb194a7d1c8bf8f78" xml:lang="en-US">Note 12 - Equity Incentive Plans, Stock-Based Compensation, Exercise of Options and Warrants Outstanding</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockTransactionsParentheticalDisclosuresAbstract" xlink:label="us-gaap_StockTransactionsParentheticalDisclosuresAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockTransactionsParentheticalDisclosuresAbstract" xlink:to="us-gaap_StockTransactionsParentheticalDisclosuresAbstract_lbl_e03d3ec7a9404bb9a64de244843555fb" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockTransactionsParentheticalDisclosuresAbstract_lbl_e03d3ec7a9404bb9a64de244843555fb" xml:lang="en-US">Equity Transactions</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:to="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl_ee9e836592fa4a86962f5f7a863fc438" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl_ee9e836592fa4a86962f5f7a863fc438" xml:lang="en-US">Note 13. Equity Transactions</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockDividendsAndOtherAdjustmentsAbstract" xlink:label="us-gaap_PreferredStockDividendsAndOtherAdjustmentsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockDividendsAndOtherAdjustmentsAbstract" xlink:to="us-gaap_PreferredStockDividendsAndOtherAdjustmentsAbstract_lbl_0201f56cd7dc4a609171367517d6551a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockDividendsAndOtherAdjustmentsAbstract_lbl_0201f56cd7dc4a609171367517d6551a" xml:lang="en-US">Series B 5 convertible preferred stock</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SeriesB5ConvertiblePreferredStock" xlink:label="ipix_SeriesB5ConvertiblePreferredStock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SeriesB5ConvertiblePreferredStock" xlink:to="ipix_SeriesB5ConvertiblePreferredStock_lbl_e19a89aa378f43d7a35a90a0639d6e1a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SeriesB5ConvertiblePreferredStock_lbl_e19a89aa378f43d7a35a90a0639d6e1a" xml:lang="en-US">Note 14 - Series B 5% convertible preferred stock</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAdjustmentDisclosureAbstract" xlink:label="us-gaap_FairValueAdjustmentDisclosureAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAdjustmentDisclosureAbstract" xlink:to="us-gaap_FairValueAdjustmentDisclosureAbstract_lbl_9a056fc0bf2e4d4fabb6da809ebe1384" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAdjustmentDisclosureAbstract_lbl_9a056fc0bf2e4d4fabb6da809ebe1384" xml:lang="en-US">Fair Value Measurement</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementInputsDisclosureTextBlock" xlink:label="us-gaap_FairValueMeasurementInputsDisclosureTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementInputsDisclosureTextBlock" xlink:to="us-gaap_FairValueMeasurementInputsDisclosureTextBlock_lbl_dd9f29067b2f4e538fc6f59d652097ce" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementInputsDisclosureTextBlock_lbl_dd9f29067b2f4e538fc6f59d652097ce" xml:lang="en-US">Note 15 - Fair Value Measurement</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="us-gaap_IncomeTaxDisclosureAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxDisclosureAbstract_lbl_16404273cc9f42618ad198f0838bb40b" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxDisclosureAbstract_lbl_16404273cc9f42618ad198f0838bb40b" xml:lang="en-US">Income Taxes</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxDisclosureTextBlock" xlink:to="us-gaap_IncomeTaxDisclosureTextBlock_lbl_d084f1cde3334ed7a961f0c15a3dad71" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl_d084f1cde3334ed7a961f0c15a3dad71" xml:lang="en-US">Note 16 - Income Taxes</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="us-gaap_SubsequentEventsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsAbstract" xlink:to="us-gaap_SubsequentEventsAbstract_lbl_49d7d6e729cd44dabb0c223bd494bce3" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsAbstract_lbl_49d7d6e729cd44dabb0c223bd494bce3" xml:lang="en-US">Subsequent Events</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="us-gaap_SubsequentEventsTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsTextBlock" xlink:to="us-gaap_SubsequentEventsTextBlock_lbl_babf98bbbc3146538d7dce7e377b865e" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl_babf98bbbc3146538d7dce7e377b865e" xml:lang="en-US">Note 17 - Subsequent Events</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="us-gaap_UseOfEstimates" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UseOfEstimates" xlink:to="us-gaap_UseOfEstimates_lbl_5d9f5ab27def47df88f1b4f45bc98772" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UseOfEstimates_lbl_5d9f5ab27def47df88f1b4f45bc98772" xml:lang="en-US">Use of Estimates</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:to="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl_91db778bc0f146649e58f52df3c88d8e" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl_91db778bc0f146649e58f52df3c88d8e" xml:lang="en-US">Cash</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:to="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl_3" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl_3" xml:lang="en-US">Cash and Cash Equivalents, Policy [Policy Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_lbl_9175192b03e241cbab64db6a96d82c49" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_lbl_9175192b03e241cbab64db6a96d82c49" xml:lang="en-US">Equipment</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsFiniteLivedPolicy" xlink:label="us-gaap_IntangibleAssetsFiniteLivedPolicy" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IntangibleAssetsFiniteLivedPolicy" xlink:to="us-gaap_IntangibleAssetsFiniteLivedPolicy_lbl_47b26455f9054d0ba9aa930548c778f4" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IntangibleAssetsFiniteLivedPolicy_lbl_47b26455f9054d0ba9aa930548c778f4" xml:lang="en-US">Intangible Assets - Patents</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_FinancialInstrumentsPolicyTextBlock" xlink:label="ipix_FinancialInstrumentsPolicyTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_FinancialInstrumentsPolicyTextBlock" xlink:to="ipix_FinancialInstrumentsPolicyTextBlock_lbl_885a7a5a3a524bc49b1d33bb3ddc030d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_FinancialInstrumentsPolicyTextBlock_lbl_885a7a5a3a524bc49b1d33bb3ddc030d" xml:lang="en-US">Financial Instruments</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_CertainRisksAndUncertaintiesPolicyTextBlock" xlink:label="ipix_CertainRisksAndUncertaintiesPolicyTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_CertainRisksAndUncertaintiesPolicyTextBlock" xlink:to="ipix_CertainRisksAndUncertaintiesPolicyTextBlock_lbl_c6e7cfabdfa841a9bc281844802a004f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_CertainRisksAndUncertaintiesPolicyTextBlock_lbl_c6e7cfabdfa841a9bc281844802a004f" xml:lang="en-US">Certain Risks and Uncertainties</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskCreditRisk" xlink:label="us-gaap_ConcentrationRiskCreditRisk" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskCreditRisk" xlink:to="us-gaap_ConcentrationRiskCreditRisk_lbl_68db539625f04ada966d765ade5f13a6" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConcentrationRiskCreditRisk_lbl_68db539625f04ada966d765ade5f13a6" xml:lang="en-US">Concentrations of Credit Risk</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AccruedOutsourcingCostsPolicyTextBlock" xlink:label="ipix_AccruedOutsourcingCostsPolicyTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AccruedOutsourcingCostsPolicyTextBlock" xlink:to="ipix_AccruedOutsourcingCostsPolicyTextBlock_lbl_ceb649cfdf7545b8b38125867933a322" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AccruedOutsourcingCostsPolicyTextBlock_lbl_ceb649cfdf7545b8b38125867933a322" xml:lang="en-US">Accrued Outsourcing Costs</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ValuationOfEquityGrantsPolicyTextBlock" xlink:label="ipix_ValuationOfEquityGrantsPolicyTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ValuationOfEquityGrantsPolicyTextBlock" xlink:to="ipix_ValuationOfEquityGrantsPolicyTextBlock_lbl_ca876d54fd584db28adf3ce47879e1a3" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ValuationOfEquityGrantsPolicyTextBlock_lbl_ca876d54fd584db28adf3ce47879e1a3" xml:lang="en-US">Valuation of Equity Grants</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxPolicyTextBlock" xlink:to="us-gaap_IncomeTaxPolicyTextBlock_lbl_1f54012853654250bdfb441ffb884863" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl_1f54012853654250bdfb441ffb884863" xml:lang="en-US">Income Taxes</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:label="us-gaap_IncomeTaxPolicyTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxPolicyTextBlock" xlink:to="us-gaap_IncomeTaxPolicyTextBlock_lbl_11" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl_11" xml:lang="en-US">Income Tax, Policy [Policy Text Block]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerSharePolicyTextBlock" xlink:to="us-gaap_EarningsPerSharePolicyTextBlock_lbl_9fa8b3607d8c4ad88df129b808488bde" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl_9fa8b3607d8c4ad88df129b808488bde" xml:lang="en-US">Basic Loss per Share</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_TreasuryStockPolicyTextBlock" xlink:label="ipix_TreasuryStockPolicyTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_TreasuryStockPolicyTextBlock" xlink:to="ipix_TreasuryStockPolicyTextBlock_lbl_7ab628650ef7449dbce83638c7a09977" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_TreasuryStockPolicyTextBlock_lbl_7ab628650ef7449dbce83638c7a09977" xml:lang="en-US">Treasury Stock</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:to="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl_31e111202a354f5f8605bda82add5928" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl_31e111202a354f5f8605bda82add5928" xml:lang="en-US">Accounting for Stock Based Compensation</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:to="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl_ba662745af364d2896529511682f7cec" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl_ba662745af364d2896529511682f7cec" xml:lang="en-US">Recent Adopted Accounting Pronouncements</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_RecentlyIssuedAccountingGuidancePolicyTextBlock" xlink:label="ipix_RecentlyIssuedAccountingGuidancePolicyTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_RecentlyIssuedAccountingGuidancePolicyTextBlock" xlink:to="ipix_RecentlyIssuedAccountingGuidancePolicyTextBlock_lbl_a48bf2928b2b4492b693e38c4adc6654" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_RecentlyIssuedAccountingGuidancePolicyTextBlock_lbl_a48bf2928b2b4492b693e38c4adc6654" xml:lang="en-US">Recently Issued Accounting Guidance</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_EquipmentTableTextBlock_lbl_5a1dd5ee6be34278bf1206a93e960de5" xml:lang="en-US">Equipment</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_EquipmentTableTextBlock" xlink:label="ipix_EquipmentTableTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_EquipmentTableTextBlock" xlink:to="ipix_EquipmentTableTextBlock_lbl_2" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_EquipmentTableTextBlock_lbl_2" xml:lang="en-US">[Equipment]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock" xlink:label="us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock" xlink:to="us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock_lbl_5af4dc86e6c4407f92f030b5c1ec725d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock_lbl_5af4dc86e6c4407f92f030b5c1ec725d" xml:lang="en-US">Schedule of components of stock based compensation related to stock options recognized in the company's statement of operations</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract_lbl_235ae84177ce4b318a82a355e71db92b" xml:lang="en-US">Patents, net (Tables)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock" xlink:to="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_lbl_dec51567ed53432da97c88bcfe95699b" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_lbl_dec51567ed53432da97c88bcfe95699b" xml:lang="en-US">Schedule of patents</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_PropertyPlantAndEquipmentNetTablesAbstract" xlink:label="ipix_PropertyPlantAndEquipmentNetTablesAbstract" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_PropertyPlantAndEquipmentNetTablesAbstract_lbl_d42c0fc74ce14c8ab4a85b6670d4fd8f" xml:lang="en-US">Property, plant and equipment, net (Tables)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock" xlink:label="us-gaap_ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock_lbl_fdc6e609bf7749fcbf321b63346abd20" xml:lang="en-US">Property, plant and equipment</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AccruedExpensesRelatedPartiesAndOtherTablesAbstract_lbl_b06381ab4f2f4575b5bd234c77ae301d" xml:lang="en-US">Accrued Expenses Related Parties and Other (Tables)</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock" xlink:to="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_lbl_b386ddfed6e643f090350df807757056" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_lbl_b386ddfed6e643f090350df807757056" xml:lang="en-US">Schedule of accrued expenses</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AccruedSalariesAndPayrollTaxesRelatedPartiesAndOtherTablesAbstract" xlink:label="ipix_AccruedSalariesAndPayrollTaxesRelatedPartiesAndOtherTablesAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AccruedSalariesAndPayrollTaxesRelatedPartiesAndOtherTablesAbstract" xlink:to="ipix_AccruedSalariesAndPayrollTaxesRelatedPartiesAndOtherTablesAbstract_lbl_faf2c8db432b460ca5aa1213f7e2abb8" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AccruedSalariesAndPayrollTaxesRelatedPartiesAndOtherTablesAbstract_lbl_faf2c8db432b460ca5aa1213f7e2abb8" xml:lang="en-US">Accrued Salaries and Payroll Taxes Related Parties And Other (Tables)</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_DisclosureWeightedAverageSharesOutstandingTablesAbstract_lbl_39bdbb9de8e645b78875c77770ee8b3d" xml:lang="en-US">Weighted Average Shares Outstanding (Tables)</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfWeightedAverageNumberOfSharesTableTextBlock" xlink:to="us-gaap_ScheduleOfWeightedAverageNumberOfSharesTableTextBlock_lbl_2" xlink:type="arc" />
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_EquityIncentivePlansStockbasedCompensationAndWarrantsTablesAbstract" xlink:to="ipix_EquityIncentivePlansStockbasedCompensationAndWarrantsTablesAbstract_lbl_834bb6df6d3744a0a8ea24f650df806c" xlink:type="arc" />
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_AwardTypeAxis_lbl_7ecf5fa2e09041789f09a0cc2fdb5e1c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AwardTypeAxis_lbl_7ecf5fa2e09041789f09a0cc2fdb5e1c" xml:lang="en-US">Award Type Axis</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock_lbl_c99bd532e6d3498b9ada9a044fd6a89f" xml:lang="en-US">Schedule of Restricted Stock Award Activity</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl_37f0435b89b148ad822d3d99cdca35ec" xml:lang="en-US">Related Party [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_TitleOfIndividualAxis" xlink:label="srt_TitleOfIndividualAxis" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_TitleOfIndividualAxis" xlink:to="srt_TitleOfIndividualAxis_lbl_9ee10aa7f6bb411ca07dc0012be5d958" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_TitleOfIndividualAxis_lbl_9ee10aa7f6bb411ca07dc0012be5d958" xml:lang="en-US">Title of Individual [Axis]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_IssuanceAgreementMember" xlink:to="ipix_IssuanceAgreementMember_lbl_27c3b8ee538b4afabd9ebc4fa7353450" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_IssuanceAgreementMember_lbl_27c3b8ee538b4afabd9ebc4fa7353450" xml:lang="en-US">Issuance Agreement [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SecuritiesPurchaseAgreementMember" xlink:label="ipix_SecuritiesPurchaseAgreementMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SecuritiesPurchaseAgreementMember" xlink:to="ipix_SecuritiesPurchaseAgreementMember_lbl_0f0408034d124b3998ffd26e78509b16" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SecuritiesPurchaseAgreementMember_lbl_0f0408034d124b3998ffd26e78509b16" xml:lang="en-US">Securities Purchase Agreement [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InvestorMember" xlink:label="us-gaap_InvestorMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestorMember" xlink:to="us-gaap_InvestorMember_lbl_02f3855ee32246058af9aed55b6fb1a5" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestorMember_lbl_02f3855ee32246058af9aed55b6fb1a5" xml:lang="en-US">Investor [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_DirectorMember" xlink:label="srt_DirectorMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_DirectorMember" xlink:to="srt_DirectorMember_lbl_65975cc0a3c944cca9b26defac0809fb" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="srt_DirectorMember_lbl_65975cc0a3c944cca9b26defac0809fb" xml:lang="en-US">Director [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_GoingConcernMember" xlink:label="ipix_GoingConcernMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_GoingConcernMember" xlink:to="ipix_GoingConcernMember_lbl_65a14a2e3789453aa03134ecbf1b6260" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_GoingConcernMember_lbl_65a14a2e3789453aa03134ecbf1b6260" xml:lang="en-US">Going Concern [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_lbl_a1f591935bed41a283afd03f4d1454dc" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl_a1f591935bed41a283afd03f4d1454dc" xml:lang="en-US">Accumulated deficit</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_TotalBudgetedExpenditures" xlink:label="ipix_TotalBudgetedExpenditures" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_TotalBudgetedExpenditures" xlink:to="ipix_TotalBudgetedExpenditures_lbl_f504939b21f040299569fdde6ba3bb40" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_TotalBudgetedExpenditures_lbl_f504939b21f040299569fdde6ba3bb40" xml:lang="en-US">Total budgeted expenditures</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Cash" xlink:to="us-gaap_Cash_lbl_a62d7c2220cc4451a4e11682cd6414f9" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_Cash_lbl_a62d7c2220cc4451a4e11682cd6414f9" xml:lang="en-US">Cash</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl_6d4f9c80c2c74dd7a4b6327622f538fd" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LiabilitiesCurrent_lbl_6d4f9c80c2c74dd7a4b6327622f538fd" xml:lang="en-US">Total Current Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DueToOtherRelatedPartiesCurrentAndNoncurrent" xlink:label="us-gaap_DueToOtherRelatedPartiesCurrentAndNoncurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DueToOtherRelatedPartiesCurrentAndNoncurrent" xlink:to="us-gaap_DueToOtherRelatedPartiesCurrentAndNoncurrent_lbl_aca97b69587f45e89bb29dba562d1a20" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DueToOtherRelatedPartiesCurrentAndNoncurrent_lbl_aca97b69587f45e89bb29dba562d1a20" xml:lang="en-US">Due to related parties</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl_4e7b108cb9754d5f9a5367a04b137873" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl_4e7b108cb9754d5f9a5367a04b137873" xml:lang="en-US">Net cash used in operating activities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl_7a84d809a8f3477782d8bf8917b14b1f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetIncomeLoss_lbl_7a84d809a8f3477782d8bf8917b14b1f" xml:lang="en-US">Net loss</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_WorkingCapitalDeficit" xlink:label="ipix_WorkingCapitalDeficit" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_WorkingCapitalDeficit" xlink:to="ipix_WorkingCapitalDeficit_lbl_7de7a0168965411aabe6358455408847" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_WorkingCapitalDeficit_lbl_7de7a0168965411aabe6358455408847" xml:lang="en-US">Working capital (deficit)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromWarrantExercises" xlink:to="us-gaap_ProceedsFromWarrantExercises_lbl_763db2a5d13441c58f1c3798958dba46" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromWarrantExercises_lbl_763db2a5d13441c58f1c3798958dba46" xml:lang="en-US">Proceeds from exercise of warrants</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_WarrantsReceived" xlink:label="ipix_WarrantsReceived" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_WarrantsReceived" xlink:to="ipix_WarrantsReceived_lbl_58b15f4c9efc4f809086946a7bea9ded" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_WarrantsReceived_lbl_58b15f4c9efc4f809086946a7bea9ded" xml:lang="en-US">Warrants received</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConvertiblePreferredStockSharesOutstanding" xlink:to="ipix_ConvertiblePreferredStockSharesOutstanding_lbl_295ff3100ab44f97b6e3b9d916a5dad9" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_ConvertiblePreferredStockSharesOutstanding_lbl_295ff3100ab44f97b6e3b9d916a5dad9" xml:lang="en-US">Convertible preferred stock, shares outstanding</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl_60b040213eda46918d025af8ec805712" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl_60b040213eda46918d025af8ec805712" xml:lang="en-US">Cash and cash equivalent</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesOutstanding" xlink:to="us-gaap_PreferredStockSharesOutstanding_lbl_8f24a401c5d84a92b19c7a450c93c348" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl_8f24a401c5d84a92b19c7a450c93c348" xml:lang="en-US">Preferred stock, shares outstanding (in shares)</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AgreementDescription" xlink:label="ipix_AgreementDescription" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AgreementDescription" xlink:to="ipix_AgreementDescription_lbl_3054cbf171d54f87b498e812ac8f1cec" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AgreementDescription_lbl_3054cbf171d54f87b498e812ac8f1cec" xml:lang="en-US">Agreement description</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesIssued" xlink:to="us-gaap_PreferredStockSharesIssued_lbl_41cdc98ebb5b46acadf19d7f4cfcd9ce" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PreferredStockSharesIssued_lbl_41cdc98ebb5b46acadf19d7f4cfcd9ce" xml:lang="en-US">Preferred stock issued, shares</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodShares" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchasedDuringPeriodShares" xlink:to="us-gaap_StockRepurchasedDuringPeriodShares_lbl_217034f53f254f12ae2af7b85a27f41b" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl_217034f53f254f12ae2af7b85a27f41b" xml:lang="en-US">Preferred stock purchased</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockValue" xlink:to="us-gaap_PreferredStockValue_lbl_7486cb592d3343e3a3d3e4bbba0882d8" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PreferredStockValue_lbl_7486cb592d3343e3a3d3e4bbba0882d8" xml:lang="en-US">Preferred stock value</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ConvertiblePreferredStockShares" xlink:label="ipix_ConvertiblePreferredStockShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConvertiblePreferredStockShares" xlink:to="ipix_ConvertiblePreferredStockShares_lbl_c3307c59ed10406bb4d8648a2849d68b" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ConvertiblePreferredStockShares_lbl_c3307c59ed10406bb4d8648a2849d68b" xml:lang="en-US">Convertible preferred stock, shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_WarrantsIssuedShares" xlink:label="ipix_WarrantsIssuedShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_WarrantsIssuedShares" xlink:to="ipix_WarrantsIssuedShares_lbl_95339d9fc3b547d791408de04bd410bb" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_WarrantsIssuedShares_lbl_95339d9fc3b547d791408de04bd410bb" xml:lang="en-US">Warrants issued, shares</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOfWarrants" xlink:label="us-gaap_ProceedsFromIssuanceOfWarrants" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfWarrants" xlink:to="us-gaap_ProceedsFromIssuanceOfWarrants_lbl_2725f38949d0440eb5b7f103437716f4" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfWarrants_lbl_2725f38949d0440eb5b7f103437716f4" xml:lang="en-US">Warrant issued, value</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SignificantAccountingPoliciesAndRecentAccountingPronouncementsDetailsAbstract" xlink:label="ipix_SignificantAccountingPoliciesAndRecentAccountingPronouncementsDetailsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SignificantAccountingPoliciesAndRecentAccountingPronouncementsDetailsAbstract" xlink:to="ipix_SignificantAccountingPoliciesAndRecentAccountingPronouncementsDetailsAbstract_lbl_d2403c028e644d0f8c1b8e11281baad9" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SignificantAccountingPoliciesAndRecentAccountingPronouncementsDetailsAbstract_lbl_d2403c028e644d0f8c1b8e11281baad9" xml:lang="en-US">Significant Accounting Policies and Recent Accounting Pronouncements (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:to="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl_a951b67a3e454143a425023cfd668bbf" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl_a951b67a3e454143a425023cfd668bbf" xml:lang="en-US">Equipment</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:to="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl_2" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl_2" xml:lang="en-US">[Property, Plant and Equipment, Useful Life]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="us-gaap_IncomeStatementLocationAxis" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementLocationAxis" xlink:to="us-gaap_IncomeStatementLocationAxis_lbl_604a590f1ef94711a2aa807b512e493c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl_604a590f1ef94711a2aa807b512e493c" xml:lang="en-US">Income Statement Location Axis</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ResearchAndDevelopmentExpenseMember" xlink:label="us-gaap_ResearchAndDevelopmentExpenseMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentExpenseMember" xlink:to="us-gaap_ResearchAndDevelopmentExpenseMember_lbl_303b21edf2a84417b7126245fdf296de" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ResearchAndDevelopmentExpenseMember_lbl_303b21edf2a84417b7126245fdf296de" xml:lang="en-US">Research and Development Expense [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfessionalFees" xlink:to="us-gaap_ProfessionalFees_lbl_c008b999b12d4bbf80f062908d937372" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProfessionalFees_lbl_c008b999b12d4bbf80f062908d937372" xml:lang="en-US">Professional fees</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeBenefitsAndShareBasedCompensation" xlink:label="us-gaap_EmployeeBenefitsAndShareBasedCompensation" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeBenefitsAndShareBasedCompensation" xlink:to="us-gaap_EmployeeBenefitsAndShareBasedCompensation_lbl_5fad0de9291a4b878dbb45e0cd7a6f52" xlink:type="arc" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ImpairmentOfIntangibleAssetsFinitelived_lbl_ee1c6a94b69f4f9fb15e771ee1806c56" xml:lang="en-US">Patent write off</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1" xlink:to="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_lbl_6cf5355490044f8bb5d8b9599742ff0a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_lbl_6cf5355490044f8bb5d8b9599742ff0a" xml:lang="en-US">Estimated remaining useful lives of the assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:to="us-gaap_FiniteLivedIntangibleAssetUsefulLife_lbl_7d167a13a3e84617ba4c81e8e6b45fc6" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetUsefulLife_lbl_7d167a13a3e84617ba4c81e8e6b45fc6" xml:lang="en-US">Future amortization period</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_FiniteLivedIntangibleAssetsAmortizationExpenseRollingForFutureYear" xlink:label="ipix_FiniteLivedIntangibleAssetsAmortizationExpenseRollingForFutureYear" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_FiniteLivedIntangibleAssetsAmortizationExpenseRollingForFutureYear" xlink:to="ipix_FiniteLivedIntangibleAssetsAmortizationExpenseRollingForFutureYear_lbl_57523615687a4424a6e6c21d3f2b47ed" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_FiniteLivedIntangibleAssetsAmortizationExpenseRollingForFutureYear_lbl_57523615687a4424a6e6c21d3f2b47ed" xml:lang="en-US">Estimated annual amortization expense</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_PropertyPlantAndEquipmentNetDetailsAbstract" xlink:label="ipix_PropertyPlantAndEquipmentNetDetailsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_PropertyPlantAndEquipmentNetDetailsAbstract" xlink:to="ipix_PropertyPlantAndEquipmentNetDetailsAbstract_lbl_7db03f6afe304b74867cbcabd10742d3" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_PropertyPlantAndEquipmentNetDetailsAbstract_lbl_7db03f6afe304b74867cbcabd10742d3" xml:lang="en-US">Property, plant and equipment, net (Details)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MachineryAndEquipmentGross" xlink:label="us-gaap_MachineryAndEquipmentGross" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MachineryAndEquipmentGross" xlink:to="us-gaap_MachineryAndEquipmentGross_lbl_7895dcba6c844be7898e0606d26d53d8" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MachineryAndEquipmentGross_lbl_7895dcba6c844be7898e0606d26d53d8" xml:lang="en-US">Testing equipment</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl_71df100198e84076bd75e77a9864e767" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl_71df100198e84076bd75e77a9864e767" xml:lang="en-US">Less: Accumulated depreciation</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl_3" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl_3" xml:lang="en-US">[Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_lbl_d455994ab6564055ae5b1e0f42f4d5a1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl_d455994ab6564055ae5b1e0f42f4d5a1" xml:lang="en-US">Property, plant and equipment - net</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_PropertyPlantAndEquipmentNetDetailsNarrativeAbstract" xlink:label="ipix_PropertyPlantAndEquipmentNetDetailsNarrativeAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_PropertyPlantAndEquipmentNetDetailsNarrativeAbstract" xlink:to="ipix_PropertyPlantAndEquipmentNetDetailsNarrativeAbstract_lbl_29c366b73d8f4dfa89c0cdc0855a9b95" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_PropertyPlantAndEquipmentNetDetailsNarrativeAbstract_lbl_29c366b73d8f4dfa89c0cdc0855a9b95" xml:lang="en-US">Property, plant and equipment, net (Details Narrative)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Depreciation" xlink:to="us-gaap_Depreciation_lbl_ee43b8ca87e242dabb09c607685b1b2e" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_Depreciation_lbl_ee43b8ca87e242dabb09c607685b1b2e" xml:lang="en-US">Depreciation expense</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AccruedExpensesRelatedPartiesAndOtherDetailsAbstract" xlink:label="ipix_AccruedExpensesRelatedPartiesAndOtherDetailsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AccruedExpensesRelatedPartiesAndOtherDetailsAbstract" xlink:to="ipix_AccruedExpensesRelatedPartiesAndOtherDetailsAbstract_lbl_1d8e396f264449a885ce9dde06cba7c0" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AccruedExpensesRelatedPartiesAndOtherDetailsAbstract_lbl_1d8e396f264449a885ce9dde06cba7c0" xml:lang="en-US">Accrued Expenses - Related Parties and Other (Details)</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AccruedConsultingFeeCurrent" xlink:label="ipix_AccruedConsultingFeeCurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AccruedConsultingFeeCurrent" xlink:to="ipix_AccruedConsultingFeeCurrent_lbl_e5f961bbba8345579e20896f66e6305f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AccruedConsultingFeeCurrent_lbl_e5f961bbba8345579e20896f66e6305f" xml:lang="en-US">Accrued research and development consulting fees</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedRentCurrent" xlink:label="us-gaap_AccruedRentCurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedRentCurrent" xlink:to="us-gaap_AccruedRentCurrent_lbl_804e49c7f03c4c7fb5c3eb26e77710ac" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedRentCurrent_lbl_804e49c7f03c4c7fb5c3eb26e77710ac" xml:lang="en-US">Accrued rent (Note 9) - related parties</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedLiabilitiesCurrentAndNoncurrent" xlink:label="us-gaap_AccruedLiabilitiesCurrentAndNoncurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedLiabilitiesCurrentAndNoncurrent" xlink:to="us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_lbl_e5f8f2cb09424699a1f01b14e166492c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_lbl_e5f8f2cb09424699a1f01b14e166492c" xml:lang="en-US">Accrued interest (Note 10) - related parties</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedLiabilitiesCurrent" xlink:to="us-gaap_AccruedLiabilitiesCurrent_lbl_8eaf3cf5154a497b9d1285a26b24572e" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl_8eaf3cf5154a497b9d1285a26b24572e" xml:lang="en-US">Total</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AccruedSalariesAndPayrollTaxesRelatedPartiesAndOtherDetailsAbstract" xlink:label="ipix_AccruedSalariesAndPayrollTaxesRelatedPartiesAndOtherDetailsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AccruedSalariesAndPayrollTaxesRelatedPartiesAndOtherDetailsAbstract" xlink:to="ipix_AccruedSalariesAndPayrollTaxesRelatedPartiesAndOtherDetailsAbstract_lbl_3ac9cc4febb545928f1068716cf24ecf" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AccruedSalariesAndPayrollTaxesRelatedPartiesAndOtherDetailsAbstract_lbl_3ac9cc4febb545928f1068716cf24ecf" xml:lang="en-US">Accrued Salaries and Payroll Taxes - Related Parties And Other (Details)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent" xlink:to="us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent_lbl_ef5d78a0827f491e9ef9fa2d6acf3407" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent_lbl_ef5d78a0827f491e9ef9fa2d6acf3407" xml:lang="en-US">Accrued salaries - related parties</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedPayrollTaxesCurrent" xlink:label="us-gaap_AccruedPayrollTaxesCurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedPayrollTaxesCurrent" xlink:to="us-gaap_AccruedPayrollTaxesCurrent_lbl_e76a8975a5e84b86be6b298085e2673d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedPayrollTaxesCurrent_lbl_e76a8975a5e84b86be6b298085e2673d" xml:lang="en-US">Accrued payroll taxes - related parties</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedBonusesCurrent" xlink:label="us-gaap_AccruedBonusesCurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedBonusesCurrent" xlink:to="us-gaap_AccruedBonusesCurrent_lbl_50443da90bd94b0c9c24edaaf088c659" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedBonusesCurrent_lbl_50443da90bd94b0c9c24edaaf088c659" xml:lang="en-US">Accrued employee bonuses</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_WithholdingTaxPayroll" xlink:label="ipix_WithholdingTaxPayroll" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_WithholdingTaxPayroll" xlink:to="ipix_WithholdingTaxPayroll_lbl_37dfcae29c7b4898999bc14bb1af5b1a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_WithholdingTaxPayroll_lbl_37dfcae29c7b4898999bc14bb1af5b1a" xml:lang="en-US">Withholding tax - payroll</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:to="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl_26095047a3b74855a47f6524ce8996b1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl_26095047a3b74855a47f6524ce8996b1" xml:lang="en-US">Total</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:to="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl_6" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl_6" xml:lang="en-US">[Employee-related Liabilities, Current]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_DisclosureCommitmentsAndContingenciesDetailsAbstract" xlink:label="ipix_DisclosureCommitmentsAndContingenciesDetailsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_DisclosureCommitmentsAndContingenciesDetailsAbstract" xlink:to="ipix_DisclosureCommitmentsAndContingenciesDetailsAbstract_lbl_ab83a2ef7e984035a7f888aa4f103c56" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_DisclosureCommitmentsAndContingenciesDetailsAbstract_lbl_ab83a2ef7e984035a7f888aa4f103c56" xml:lang="en-US">Commitments and Contingencies (Details)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_lbl_4a2bdac20cec4922a4ff581803a1ec06" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_lbl_4a2bdac20cec4922a4ff581803a1ec06" xml:lang="en-US">Year ending June 30,</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_lbl_cfe078dc78fc40208ca87ec3ef773070" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_lbl_cfe078dc78fc40208ca87ec3ef773070" xml:lang="en-US">2020</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_lbl_57974f7dfd0142f590712f79cb7feca3" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_lbl_57974f7dfd0142f590712f79cb7feca3" xml:lang="en-US">2021</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_lbl_42edc449b30a4b80bbf78e7becf919fd" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_lbl_42edc449b30a4b80bbf78e7becf919fd" xml:lang="en-US">2022</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_lbl_71109a74329b449a83307223949b6bbf" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_lbl_71109a74329b449a83307223949b6bbf" xml:lang="en-US">2023</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_lbl_6e7f1535d05d43919e4add2cb3f90e80" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_lbl_6e7f1535d05d43919e4add2cb3f90e80" xml:lang="en-US">Thereafter</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDue_lbl_2d51f2240a5341618413746791535b9d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue_lbl_2d51f2240a5341618413746791535b9d" xml:lang="en-US">Total minimum payments</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_DisclosureCommitmentsAndContingenciesDetailsNarrativeAbstract" xlink:label="ipix_DisclosureCommitmentsAndContingenciesDetailsNarrativeAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_DisclosureCommitmentsAndContingenciesDetailsNarrativeAbstract" xlink:to="ipix_DisclosureCommitmentsAndContingenciesDetailsNarrativeAbstract_lbl_9ba9249c03994f4b83cd147e8c29e857" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_DisclosureCommitmentsAndContingenciesDetailsNarrativeAbstract_lbl_9ba9249c03994f4b83cd147e8c29e857" xml:lang="en-US">Commitments and Contingencies (Details Narrative)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesRentExpenseNet" xlink:label="us-gaap_OperatingLeasesRentExpenseNet" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesRentExpenseNet" xlink:to="us-gaap_OperatingLeasesRentExpenseNet_lbl_204f53be34d74adf9deb2b580363f978" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesRentExpenseNet_lbl_204f53be34d74adf9deb2b580363f978" xml:lang="en-US">Operating leases, rental expense</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_LeaseTerm" xlink:label="ipix_LeaseTerm" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_LeaseTerm" xlink:to="ipix_LeaseTerm_lbl_0d42bfeec7024cca8241858fa181fbb6" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_LeaseTerm_lbl_0d42bfeec7024cca8241858fa181fbb6" xml:lang="en-US">Lease term</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseExpirationDate1" xlink:label="us-gaap_LeaseExpirationDate1" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseExpirationDate1" xlink:to="us-gaap_LeaseExpirationDate1_lbl_1c43752cd5434cfbaddece33fc266dbf" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeaseExpirationDate1_lbl_1c43752cd5434cfbaddece33fc266dbf" xml:lang="en-US">Lease expiry date</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseAndRentalExpense" xlink:label="us-gaap_LeaseAndRentalExpense" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseAndRentalExpense" xlink:to="us-gaap_LeaseAndRentalExpense_lbl_1013842e4ade44b298a480cc47e34d2b" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeaseAndRentalExpense_lbl_1013842e4ade44b298a480cc47e34d2b" xml:lang="en-US">Rent expense (monthly)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractualObligation" xlink:label="us-gaap_ContractualObligation" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractualObligation" xlink:to="us-gaap_ContractualObligation_lbl_9fabfcd06b0f4591a5fd96829dd6c8f0" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ContractualObligation_lbl_9fabfcd06b0f4591a5fd96829dd6c8f0" xml:lang="en-US">Total contractual commitments</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_DisclosureRelatedPartyTransactionsDetailsNarrativeAbstract" xlink:label="ipix_DisclosureRelatedPartyTransactionsDetailsNarrativeAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_DisclosureRelatedPartyTransactionsDetailsNarrativeAbstract" xlink:to="ipix_DisclosureRelatedPartyTransactionsDetailsNarrativeAbstract_lbl_53eb8418d8b744a191e33ac58383e85f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_DisclosureRelatedPartyTransactionsDetailsNarrativeAbstract_lbl_53eb8418d8b744a191e33ac58383e85f" xml:lang="en-US">Related Party Transactions (Details Narrative)</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_KardScientificMember" xlink:label="ipix_KardScientificMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_KardScientificMember" xlink:to="ipix_KardScientificMember_lbl_dfffb2ae7bd244d58d59f33401778cd1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_KardScientificMember_lbl_dfffb2ae7bd244d58d59f33401778cd1" xml:lang="en-US">Kard Scientific [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ClinicalStudiesMember" xlink:label="ipix_ClinicalStudiesMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ClinicalStudiesMember" xlink:to="ipix_ClinicalStudiesMember_lbl_b8c73b9b5ae445ba83e549dd63fe1685" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ClinicalStudiesMember_lbl_b8c73b9b5ae445ba83e549dd63fe1685" xml:lang="en-US">Clinical Studies [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseAndRentalExpense" xlink:to="us-gaap_LeaseAndRentalExpense_lbl_5ecaa44997584205a73050a1954c682b" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LeaseAndRentalExpense_lbl_5ecaa44997584205a73050a1954c682b" xml:lang="en-US">Rent expense</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AccruedResearchAndDevelopmentExpenses" xlink:label="ipix_AccruedResearchAndDevelopmentExpenses" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AccruedResearchAndDevelopmentExpenses" xlink:to="ipix_AccruedResearchAndDevelopmentExpenses_lbl_a3b78de4188d453dba928ab61c9e69a6" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AccruedResearchAndDevelopmentExpenses_lbl_a3b78de4188d453dba928ab61c9e69a6" xml:lang="en-US">Accrued research and development expenses</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_DisclosureConvertibleNotePayableRelatedPartyDetailsNarrativeAbstract" xlink:label="ipix_DisclosureConvertibleNotePayableRelatedPartyDetailsNarrativeAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_DisclosureConvertibleNotePayableRelatedPartyDetailsNarrativeAbstract" xlink:to="ipix_DisclosureConvertibleNotePayableRelatedPartyDetailsNarrativeAbstract_lbl_e7af70edc6a44faa99b3755aae112d38" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_DisclosureConvertibleNotePayableRelatedPartyDetailsNarrativeAbstract_lbl_e7af70edc6a44faa99b3755aae112d38" xml:lang="en-US">Convertible Note Payable Related Party (Details Narrative)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionAxis" xlink:label="us-gaap_RelatedPartyTransactionAxis" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionAxis" xlink:to="us-gaap_RelatedPartyTransactionAxis_lbl_066c5a3704414ee099914290efc053d0" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionAxis_lbl_066c5a3704414ee099914290efc053d0" xml:lang="en-US">Related Party Transaction Axis</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_EhrlichPromissoryNoteCMember" xlink:label="ipix_EhrlichPromissoryNoteCMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_EhrlichPromissoryNoteCMember" xlink:to="ipix_EhrlichPromissoryNoteCMember_lbl_e2380d9ba84349e5bac02a4d26658568" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_EhrlichPromissoryNoteCMember_lbl_e2380d9ba84349e5bac02a4d26658568" xml:lang="en-US">Ehrlich Promissory Note C [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_MrEhrlichMember" xlink:label="ipix_MrEhrlichMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_MrEhrlichMember" xlink:to="ipix_MrEhrlichMember_lbl_b9d46d3a9ce143d4a23177e19a14eabc" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_MrEhrlichMember_lbl_b9d46d3a9ce143d4a23177e19a14eabc" xml:lang="en-US">Mr. Ehrlich [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_EhrlichPromissoryNotesAandBMember" xlink:label="ipix_EhrlichPromissoryNotesAandBMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_EhrlichPromissoryNotesAandBMember" xlink:to="ipix_EhrlichPromissoryNotesAandBMember_lbl_65588c50c4234b50be8436e6cddb6b51" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_EhrlichPromissoryNotesAandBMember_lbl_65588c50c4234b50be8436e6cddb6b51" xml:lang="en-US">Ehrlich Promissory Notes A and B [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MinimumMember" xlink:to="srt_MinimumMember_lbl_10ab221cf640433791e8d63b7ac0ebf9" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="srt_MinimumMember_lbl_10ab221cf640433791e8d63b7ac0ebf9" xml:lang="en-US">Minimum [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MaximumMember" xlink:to="srt_MaximumMember_lbl_9867d94d1f5f4e6783c2dee9dd5319ae" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="srt_MaximumMember_lbl_9867d94d1f5f4e6783c2dee9dd5319ae" xml:lang="en-US">Maximum [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonClassBMember" xlink:to="us-gaap_CommonClassBMember_lbl_d9a4566fa0834a0399e2dde03003f1e3" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonClassBMember_lbl_d9a4566fa0834a0399e2dde03003f1e3" xml:lang="en-US">Common Class B</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_LeoEhrlichMember" xlink:label="ipix_LeoEhrlichMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_LeoEhrlichMember" xlink:to="ipix_LeoEhrlichMember_lbl_3d9531d5c0224cf19b13c49d2534fe62" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_LeoEhrlichMember_lbl_3d9531d5c0224cf19b13c49d2534fe62" xml:lang="en-US">Leo Ehrlich [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:label="us-gaap_InterestPayableCurrent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPayableCurrent" xlink:to="us-gaap_InterestPayableCurrent_lbl_20b3f79561e24b01b4baabac7c660b39" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPayableCurrent_lbl_20b3f79561e24b01b4baabac7c660b39" xml:lang="en-US">Accrued interest - related parties</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_PrincipalBalancesOfDemandNote" xlink:label="ipix_PrincipalBalancesOfDemandNote" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_PrincipalBalancesOfDemandNote" xlink:to="ipix_PrincipalBalancesOfDemandNote_lbl_638c06fb95374af7a8796102b7f5d34f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_PrincipalBalancesOfDemandNote_lbl_638c06fb95374af7a8796102b7f5d34f" xml:lang="en-US">Principal balance of demand notes</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_TotalOutstandingBalanceOfPrincipalAndInterest" xlink:label="ipix_TotalOutstandingBalanceOfPrincipalAndInterest" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_TotalOutstandingBalanceOfPrincipalAndInterest" xlink:to="ipix_TotalOutstandingBalanceOfPrincipalAndInterest_lbl_6d93410a0fff42ae8a4460fa104a3bc3" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_TotalOutstandingBalanceOfPrincipalAndInterest_lbl_6d93410a0fff42ae8a4460fa104a3bc3" xml:lang="en-US">Total outstanding balance of principal and interest</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableInterestBearingInterestRate" xlink:label="us-gaap_AccountsPayableInterestBearingInterestRate" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableInterestBearingInterestRate" xlink:to="us-gaap_AccountsPayableInterestBearingInterestRate_lbl_6c38a24a101243658b8d53ad903114f0" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableInterestBearingInterestRate_lbl_6c38a24a101243658b8d53ad903114f0" xml:lang="en-US">Interest rate</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockNoParValue" xlink:label="us-gaap_CommonStockNoParValue" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockNoParValue" xlink:to="us-gaap_CommonStockNoParValue_lbl_3e68dcb2f830437685b1d45f274fed30" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockNoParValue_lbl_3e68dcb2f830437685b1d45f274fed30" xml:lang="en-US">Common stock price per share</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OptionIndexedToIssuersEquityIndexedShares" xlink:label="us-gaap_OptionIndexedToIssuersEquityIndexedShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OptionIndexedToIssuersEquityIndexedShares" xlink:to="us-gaap_OptionIndexedToIssuersEquityIndexedShares_lbl_14f601c7619e471596dd4a4581b03bc8" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OptionIndexedToIssuersEquityIndexedShares_lbl_14f601c7619e471596dd4a4581b03bc8" xml:lang="en-US">Equity incentive shares</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_lbl_e19589abc81a43ea945fa6a3382aaf91" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_lbl_e19589abc81a43ea945fa6a3382aaf91" xml:lang="en-US">Exercise price</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ClosingBidPricePerShare" xlink:label="ipix_ClosingBidPricePerShare" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ClosingBidPricePerShare" xlink:to="ipix_ClosingBidPricePerShare_lbl_aaf91603ebe845728d638398dcbb2505" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ClosingBidPricePerShare_lbl_aaf91603ebe845728d638398dcbb2505" xml:lang="en-US">Closing bid price per share</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_PercentageClosingBidPrice" xlink:label="ipix_PercentageClosingBidPrice" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_PercentageClosingBidPrice" xlink:to="ipix_PercentageClosingBidPrice_lbl_c466dcb7ccca4fff9642ea3ca0780288" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_PercentageClosingBidPrice_lbl_c466dcb7ccca4fff9642ea3ca0780288" xml:lang="en-US">Percentage of closing bid price</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToFundPolicyLoans" xlink:label="us-gaap_PaymentsToFundPolicyLoans" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToFundPolicyLoans" xlink:to="us-gaap_PaymentsToFundPolicyLoans_lbl_a7f5c8c9c27f410b98ce47bc5b898561" xlink:type="arc" />
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    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_DebtCancellation" xlink:label="ipix_DebtCancellation" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_DebtCancellation" xlink:to="ipix_DebtCancellation_lbl_28826fd24f1a4b68b8a7bc99c12d047a" xlink:type="arc" />
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_DisclosureWeightedAverageSharesOutstandingDetailsAbstract" xlink:to="ipix_DisclosureWeightedAverageSharesOutstandingDetailsAbstract_lbl_f1cc42d2e0904a289fecdf2f2f81a4f5" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_DisclosureWeightedAverageSharesOutstandingDetailsAbstract_lbl_f1cc42d2e0904a289fecdf2f2f81a4f5" xml:lang="en-US">Weighted Average Shares Outstanding (Details)</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl_57737c6ceff34795b1bb5e02d475c14f" xml:lang="en-US">Weighted average shares outstanding-basic</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_lbl_395a8c706f74422eb8f0ef7826701f74" xml:lang="en-US">Weighted average shares outstanding-diluted</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareDilutedOtherDisclosuresAbstract" xlink:to="us-gaap_EarningsPerShareDilutedOtherDisclosuresAbstract_lbl_0fc6536755d84463bbec5950672b44d2" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareDilutedOtherDisclosuresAbstract_lbl_0fc6536755d84463bbec5950672b44d2" xml:lang="en-US">Antidilutive securities not included:</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_StockOptions" xlink:label="ipix_StockOptions" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_StockOptions" xlink:to="ipix_StockOptions_lbl_baf9d30c19294b85aba33861b7907782" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_StockOptions_lbl_baf9d30c19294b85aba33861b7907782" xml:lang="en-US">Stock options</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl_a0cc74372bf44e66b686000e135e2faf" xml:lang="en-US">Stock options arising from convertible note payable and interests</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesRestrictedStock" xlink:label="us-gaap_WeightedAverageNumberOfSharesRestrictedStock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesRestrictedStock" xlink:to="us-gaap_WeightedAverageNumberOfSharesRestrictedStock_lbl_c890435917c7457aa60f67ce8796d7e7" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfSharesRestrictedStock_lbl_c890435917c7457aa60f67ce8796d7e7" xml:lang="en-US">Restricted stock grants</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmountWarrants" xlink:label="ipix_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmountWarrants" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmountWarrants" xlink:to="ipix_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmountWarrants_lbl_596e5eab6ee4460cb85d713b561f814d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmountWarrants_lbl_596e5eab6ee4460cb85d713b561f814d" xml:lang="en-US">Warrants</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl_b42088472f8a4e59844c90268d762001" xml:lang="en-US">Convertible preferred stock</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl_7cfc0e7f9fd4496bb56dd34c9e17b793" xml:lang="en-US">Total</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl_11" xml:lang="en-US">[Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_DisclosureEquityIncentivePlansStockbasedCompensationExerciseOfOptionsAndWarrantsOutstandingDetailsAbstract" xlink:label="ipix_DisclosureEquityIncentivePlansStockbasedCompensationExerciseOfOptionsAndWarrantsOutstandingDetailsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_DisclosureEquityIncentivePlansStockbasedCompensationExerciseOfOptionsAndWarrantsOutstandingDetailsAbstract" xlink:to="ipix_DisclosureEquityIncentivePlansStockbasedCompensationExerciseOfOptionsAndWarrantsOutstandingDetailsAbstract_lbl_fdeb4afa7ffb468db86d331f0bf49c4f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_DisclosureEquityIncentivePlansStockbasedCompensationExerciseOfOptionsAndWarrantsOutstandingDetailsAbstract_lbl_fdeb4afa7ffb468db86d331f0bf49c4f" xml:lang="en-US">Equity Incentive Plans, Stock-Based Compensation, Exercise of Options and Warrants Outstanding (Details)</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockOptionMember_lbl_677c5dd1b5414ea896619c684b4c4543" xml:lang="en-US">Stock options [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_lbl_f9978ee3bfce4c6380d52e7053b61799" xml:lang="en-US">Number of Options</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl_16a65b9ec7874ce5a84136971b41d222" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl_16a65b9ec7874ce5a84136971b41d222" xml:lang="en-US">Number of Outstanding, Beginning Balance</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl_3" xml:lang="en-US">[Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_lbl_c4f2bd2310d9485aab7759dcdb4b69b2" xml:lang="en-US">Granted</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl_01c314462a0c4b1e9a75b82ae139ea10" xml:lang="en-US">Exercised</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested_lbl_9" xml:lang="en-US">[Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl_61b598626cd543a0833e1bb0ad141794" xlink:type="arc" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl_11" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl_11" xml:lang="en-US">[Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl_64a0760bf55144cebe5ed1b27059adcf" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl_64a0760bf55144cebe5ed1b27059adcf" xml:lang="en-US">Granted</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl_12" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl_12" xml:lang="en-US">[Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl_260fdf841e2549bda8f8f4045373139c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl_260fdf841e2549bda8f8f4045373139c" xml:lang="en-US">Exercised</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl_13" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl_13" xml:lang="en-US">[Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_lbl_06fd9d6f71a943cab75809d83ca54355" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_lbl_06fd9d6f71a943cab75809d83ca54355" xml:lang="en-US">Forfeited/expired</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_lbl_14" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_lbl_14" xml:lang="en-US">[Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl_2dc66e932dd3403d86fca236b857e838" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl_2dc66e932dd3403d86fca236b857e838" xml:lang="en-US">Weighted Average Exercise Price, Ending Balance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl_60c1c85b34254b249c31323cc21b54bd" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl_60c1c85b34254b249c31323cc21b54bd" xml:lang="en-US">Weighted Average Exercise Price, Exercisable</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl_16" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl_16" xml:lang="en-US">[Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_UnvestedStockOptionsEndingBalance" xlink:label="ipix_UnvestedStockOptionsEndingBalance" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_UnvestedStockOptionsEndingBalance" xlink:to="ipix_UnvestedStockOptionsEndingBalance_lbl_a4f3ea589bd74b11a01161fa6e9d8e3c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_UnvestedStockOptionsEndingBalance_lbl_a4f3ea589bd74b11a01161fa6e9d8e3c" xml:lang="en-US">Unvested stock options</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_lbl_df6718c7d75a4d828bcf749421d4b941" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_lbl_df6718c7d75a4d828bcf749421d4b941" xml:lang="en-US">Weighted Average Remaining Contractual Life (Years)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl_93c403952b8444078458da1d8615609d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl_93c403952b8444078458da1d8615609d" xml:lang="en-US">Weighted average remaining contractual life (Years), Outstanding, Beginning Balance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2Granted" xlink:to="ipix_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2Granted_lbl_9adfb350150a411dbc0b45ce391a7111" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2Granted_lbl_9adfb350150a411dbc0b45ce391a7111" xml:lang="en-US">Granted</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2Granted" xlink:label="ipix_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2Granted" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2Granted" xlink:to="ipix_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2Granted_lbl_20" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2Granted_lbl_20" xml:lang="en-US">[Granted]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm" xlink:label="ipix_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm" xlink:to="ipix_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm_lbl_cba68a4e28a14903a6f2d630b6ed873e" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm_lbl_cba68a4e28a14903a6f2d630b6ed873e" xml:lang="en-US">Weighted average remaining contractual life (Years), Outstanding, Ending Balance</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl_536f788e6cec45ee9cee621798d0058a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl_536f788e6cec45ee9cee621798d0058a" xml:lang="en-US">Weighted average remaining contractual life (Years), Exercisable</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_WeightedAverageRemainingContractualLifeYearsUnvestedStockOptions" xlink:label="ipix_WeightedAverageRemainingContractualLifeYearsUnvestedStockOptions" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_WeightedAverageRemainingContractualLifeYearsUnvestedStockOptions" xlink:to="ipix_WeightedAverageRemainingContractualLifeYearsUnvestedStockOptions_lbl_50ba362897d04555b8920eb6ed159f0a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_WeightedAverageRemainingContractualLifeYearsUnvestedStockOptions_lbl_50ba362897d04555b8920eb6ed159f0a" xml:lang="en-US">Weighted average remaining contractual life (Years), Unvested stock options</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract_lbl_287b8849cc6f435e862787146356b4c4" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract_lbl_287b8849cc6f435e862787146356b4c4" xml:lang="en-US">Aggregate Intrinsic Value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl_d91812ca801c440fa9b860ee8b1aad16" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl_d91812ca801c440fa9b860ee8b1aad16" xml:lang="en-US">Aggregate intrinsic value, Beginning Balance</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl_25" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl_25" xml:lang="en-US">[Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl_946361839a844f2aaee85437d57c44f6" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl_946361839a844f2aaee85437d57c44f6" xml:lang="en-US">Aggregate intrinsic value, Ending Balance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl_99beb8d7879a4e72a077c56d6a135365" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl_99beb8d7879a4e72a077c56d6a135365" xml:lang="en-US">Aggregate intrinsic value, Exercisable</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl_27" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl_27" xml:lang="en-US">[Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value]</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum_lbl_4" xml:lang="en-US">[Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum]</link:label>
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    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVested" xlink:label="ipix_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVested" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_lbl_dfb383b03751426fb7e964f4d75122dc" xml:lang="en-US">Total shares forfeited</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_lbl_5" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_lbl_5" xml:lang="en-US">[Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period]</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ipix_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm_lbl_96b98689ef7b4ee5901f5fb9d27cc4d6" xml:lang="en-US">Weighted average remaining contractual life (Years), Outstanding, Ending Balance</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract_lbl_2e9ce3000eaa4404b3387e8ca4ccddfb" xml:lang="en-US">Aggregate Intrinsic Value</link:label>
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_DisclosureEquityIncentivePlansStockbasedCompensationExerciseOfOptionsAndWarrantsOutstandingDetailsNarrativeAbstract_lbl_4d72ac284b1e4daa8ce11aa10e600e3b" xml:lang="en-US">Equity Incentive Plans StockBased Compensation Exercise of Options and Warrants Outstanding (Details Narrative)</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AwardDateAxis" xlink:to="us-gaap_AwardDateAxis_lbl_19293132cfd54bb3956888ddcbfbb534" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AwardDateAxis_lbl_19293132cfd54bb3956888ddcbfbb534" xml:lang="en-US">Award Date Axis</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis" xlink:label="us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis" xlink:to="us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis_lbl_77a2372a97ca43c984194b148a56d50d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis_lbl_77a2372a97ca43c984194b148a56d50d" xml:lang="en-US">Employee Stock Ownership Plan (ESOP) Name [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis_lbl_84536c4cebae4752aac33ec2ef72fef3" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_LegalEntityAxis_lbl_84536c4cebae4752aac33ec2ef72fef3" xml:lang="en-US">Legal Entity Axis</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantMember" xlink:to="us-gaap_WarrantMember_lbl_5f9f966af6854b97b7ce63200dc8e49a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_WarrantMember_lbl_5f9f966af6854b97b7ce63200dc8e49a" xml:lang="en-US">Warrant [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_MrEhrlichMember" xlink:to="ipix_MrEhrlichMember_lbl_32059e95c5e548a789f123d649bac338" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_MrEhrlichMember_lbl_32059e95c5e548a789f123d649bac338" xml:lang="en-US">Mr. Ehrlich [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockOptionMember" xlink:to="us-gaap_StockOptionMember_lbl_46c118e1d41143bc91a098e9cd010844" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockOptionMember_lbl_46c118e1d41143bc91a098e9cd010844" xml:lang="en-US">Stock options [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_OnSeptemberOneTwoThousandEighteenMember" xlink:label="ipix_OnSeptemberOneTwoThousandEighteenMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_OnSeptemberOneTwoThousandEighteenMember" xlink:to="ipix_OnSeptemberOneTwoThousandEighteenMember_lbl_7a65d3b2738c44778f905812ed89e0ef" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_OnSeptemberOneTwoThousandEighteenMember_lbl_7a65d3b2738c44778f905812ed89e0ef" xml:lang="en-US">On September 1, 2018 [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_DrArthurBertolinoMember" xlink:label="ipix_DrArthurBertolinoMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_DrArthurBertolinoMember" xlink:to="ipix_DrArthurBertolinoMember_lbl_238b7b7038d34c6db5730968c74f9674" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_DrArthurBertolinoMember_lbl_238b7b7038d34c6db5730968c74f9674" xml:lang="en-US">Dr. Arthur Bertolino [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_OnSeptemberOneTwoThousandEighteenteenMember" xlink:to="ipix_OnSeptemberOneTwoThousandEighteenteenMember_lbl_ef9a05e6dd4e40909dd43c27069bdc64" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_OnSeptemberOneTwoThousandEighteenteenMember_lbl_ef9a05e6dd4e40909dd43c27069bdc64" xml:lang="en-US">On September 1, 2018 [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_OnSeptemberOneTwoThousandEighteenteenMember" xlink:label="ipix_OnSeptemberOneTwoThousandEighteenteenMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_OnSeptemberOneTwoThousandEighteenteenMember" xlink:to="ipix_OnSeptemberOneTwoThousandEighteenteenMember_lbl_129" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_OnSeptemberOneTwoThousandEighteenteenMember_lbl_129" xml:lang="en-US">[On September 1, 2018 [Member]]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_MsJaneHarnessMember" xlink:label="ipix_MsJaneHarnessMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_MsJaneHarnessMember" xlink:to="ipix_MsJaneHarnessMember_lbl_4f9051985fde491c85780b7c64b1bd63" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_MsJaneHarnessMember_lbl_4f9051985fde491c85780b7c64b1bd63" xml:lang="en-US">Ms. Jane Harness [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_TwoThousandSixteenEquityIncentivePlanMember" xlink:label="ipix_TwoThousandSixteenEquityIncentivePlanMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_TwoThousandSixteenEquityIncentivePlanMember" xlink:to="ipix_TwoThousandSixteenEquityIncentivePlanMember_lbl_84ae6803f0f645b881601c0951caf0f6" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_TwoThousandSixteenEquityIncentivePlanMember_lbl_84ae6803f0f645b881601c0951caf0f6" xml:lang="en-US">2016 Equity Incentive Plan [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_OnJuneThirtyTwoThousandSixteenMember" xlink:label="ipix_OnJuneThirtyTwoThousandSixteenMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_OnJuneThirtyTwoThousandSixteenMember" xlink:to="ipix_OnJuneThirtyTwoThousandSixteenMember_lbl_e9e0dea6336840faa54f955affc3821a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_OnJuneThirtyTwoThousandSixteenMember_lbl_e9e0dea6336840faa54f955affc3821a" xml:lang="en-US">On June 30, 2016 [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ConsultantOneMember" xlink:label="ipix_ConsultantOneMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConsultantOneMember" xlink:to="ipix_ConsultantOneMember_lbl_bf0e589af7344681af1266e5068aefbc" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ConsultantOneMember_lbl_bf0e589af7344681af1266e5068aefbc" xml:lang="en-US">Consultant 1 [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_DrBertolinoMember" xlink:label="ipix_DrBertolinoMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_DrBertolinoMember" xlink:to="ipix_DrBertolinoMember_lbl_191f7f14dc114b72b9584de74fe4cad5" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_DrBertolinoMember_lbl_191f7f14dc114b72b9584de74fe4cad5" xml:lang="en-US">Dr. Bertolino [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_OnSeptember12019Member" xlink:label="ipix_OnSeptember12019Member" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_OnSeptember12019Member" xlink:to="ipix_OnSeptember12019Member_lbl_439d3655dc4149d3bab5abc2a576a26c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_OnSeptember12019Member_lbl_439d3655dc4149d3bab5abc2a576a26c" xml:lang="en-US">On September 1, 2019 [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeriesBMember" xlink:label="us-gaap_SeriesBMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeriesBMember" xlink:to="us-gaap_SeriesBMember_lbl_2c8cbfff3a53405cb0737a17a98248e2" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SeriesBMember_lbl_2c8cbfff3a53405cb0737a17a98248e2" xml:lang="en-US">Series B [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_OnMayTwentyNineTwoThousandEighteenMember" xlink:label="ipix_OnMayTwentyNineTwoThousandEighteenMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_OnMayTwentyNineTwoThousandEighteenMember" xlink:to="ipix_OnMayTwentyNineTwoThousandEighteenMember_lbl_80439436d6164e12ae3af95b806b2aec" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_OnMayTwentyNineTwoThousandEighteenMember_lbl_80439436d6164e12ae3af95b806b2aec" xml:lang="en-US">On May 29, 2018 [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_DrKrishnaMenonMember" xlink:label="ipix_DrKrishnaMenonMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_DrKrishnaMenonMember" xlink:to="ipix_DrKrishnaMenonMember_lbl_c798aa13fa554ccf96393e0b316d5364" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_DrKrishnaMenonMember_lbl_c798aa13fa554ccf96393e0b316d5364" xml:lang="en-US">Dr. Krishna Menon [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_EmployeesMember" xlink:label="ipix_EmployeesMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_EmployeesMember" xlink:to="ipix_EmployeesMember_lbl_fad33a1f9c874c7da0b2bf3e3095b0b4" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_EmployeesMember_lbl_fad33a1f9c874c7da0b2bf3e3095b0b4" xml:lang="en-US">Employees [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_MsHarnessMember" xlink:label="ipix_MsHarnessMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_MsHarnessMember" xlink:to="ipix_MsHarnessMember_lbl_b6df2c1e1403421ba5e628ba0ef8ca97" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_MsHarnessMember_lbl_b6df2c1e1403421ba5e628ba0ef8ca97" xml:lang="en-US">Ms. Harness [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_OnJuneTwentyEightThousandEighteenMember" xlink:label="ipix_OnJuneTwentyEightThousandEighteenMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_OnJuneTwentyEightThousandEighteenMember" xlink:to="ipix_OnJuneTwentyEightThousandEighteenMember_lbl_9d0bf91adf174e5189720352414d5329" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_OnJuneTwentyEightThousandEighteenMember_lbl_9d0bf91adf174e5189720352414d5329" xml:lang="en-US">On June 28, 2018 [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_MsAnnePonugotiMember" xlink:label="ipix_MsAnnePonugotiMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_MsAnnePonugotiMember" xlink:to="ipix_MsAnnePonugotiMember_lbl_927f517ab11f4000850555c6e70700ad" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_MsAnnePonugotiMember_lbl_927f517ab11f4000850555c6e70700ad" xml:lang="en-US">Ms. Anne Ponugoti [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_OnSeptemberOneTwoThousandSeventeenMember" xlink:label="ipix_OnSeptemberOneTwoThousandSeventeenMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_OnSeptemberOneTwoThousandSeventeenMember" xlink:to="ipix_OnSeptemberOneTwoThousandSeventeenMember_lbl_309d41f36c1746a1a9cda3dfffa71180" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_OnSeptemberOneTwoThousandSeventeenMember_lbl_309d41f36c1746a1a9cda3dfffa71180" xml:lang="en-US">On September 1, 2017 [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SecuritiesPurchaseAgreemenMember" xlink:to="ipix_SecuritiesPurchaseAgreemenMember_lbl_e0ecf36d87da45a6a8c0c393ebb66429" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_SecuritiesPurchaseAgreemenMember_lbl_e0ecf36d87da45a6a8c0c393ebb66429" xml:lang="en-US">Securities Purchase Agreement [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SecuritiesPurchaseAgreemenMember" xlink:label="ipix_SecuritiesPurchaseAgreemenMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SecuritiesPurchaseAgreemenMember" xlink:to="ipix_SecuritiesPurchaseAgreemenMember_lbl_144" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SecuritiesPurchaseAgreemenMember_lbl_144" xml:lang="en-US">[Securities Purchase Agreement [Member]]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AspireCapitalFundLlcMember" xlink:label="ipix_AspireCapitalFundLlcMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AspireCapitalFundLlcMember" xlink:to="ipix_AspireCapitalFundLlcMember_lbl_61cf1078358f4b02964cfcf545c9993d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AspireCapitalFundLlcMember_lbl_61cf1078358f4b02964cfcf545c9993d" xml:lang="en-US">Aspire Capital Fund LLC [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SeriesOneToTwoWarrantMember" xlink:label="ipix_SeriesOneToTwoWarrantMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SeriesOneToTwoWarrantMember" xlink:to="ipix_SeriesOneToTwoWarrantMember_lbl_3eb98f2a56534107a46ed9a13fbabbbd" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SeriesOneToTwoWarrantMember_lbl_3eb98f2a56534107a46ed9a13fbabbbd" xml:lang="en-US">Series 1-2 warrants [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SeriesOneToThreeWarrantMember" xlink:label="ipix_SeriesOneToThreeWarrantMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SeriesOneToThreeWarrantMember" xlink:to="ipix_SeriesOneToThreeWarrantMember_lbl_da2351e197994b19b803555cca842566" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SeriesOneToThreeWarrantMember_lbl_da2351e197994b19b803555cca842566" xml:lang="en-US">Series 1-3 warrants [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AdditionalThreeyearMember" xlink:label="ipix_AdditionalThreeyearMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AdditionalThreeyearMember" xlink:to="ipix_AdditionalThreeyearMember_lbl_93c43005406f40668a13a1e16346d433" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AdditionalThreeyearMember_lbl_93c43005406f40668a13a1e16346d433" xml:lang="en-US">Additional Three year [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_June12018Member" xlink:label="ipix_June12018Member" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_June12018Member" xlink:to="ipix_June12018Member_lbl_46cc7a1e2c5f4c21bff4bd882c1c72a1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_June12018Member_lbl_46cc7a1e2c5f4c21bff4bd882c1c72a1" xml:lang="en-US">June 1, 2018 [Member</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SecuritiesPurchaseAgreementMember" xlink:to="ipix_SecuritiesPurchaseAgreementMember_lbl_8661ee88726c4ff6b33e0bc5ee0cd3a8" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_SecuritiesPurchaseAgreementMember_lbl_8661ee88726c4ff6b33e0bc5ee0cd3a8" xml:lang="en-US">Securities Purchase Agreement [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SeriesOneWarrantMember" xlink:label="ipix_SeriesOneWarrantMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SeriesOneWarrantMember" xlink:to="ipix_SeriesOneWarrantMember_lbl_72994cbcf1e84f6fb1f306c403f423f8" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SeriesOneWarrantMember_lbl_72994cbcf1e84f6fb1f306c403f423f8" xml:lang="en-US">Series 1 warrant [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SeriesTwoWarrantMember" xlink:label="ipix_SeriesTwoWarrantMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SeriesTwoWarrantMember" xlink:to="ipix_SeriesTwoWarrantMember_lbl_f6ca85c2d1664127abc687e5468d9493" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SeriesTwoWarrantMember_lbl_f6ca85c2d1664127abc687e5468d9493" xml:lang="en-US">Series 2 warrant [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SeriesThreeWarrantMember" xlink:label="ipix_SeriesThreeWarrantMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SeriesThreeWarrantMember" xlink:to="ipix_SeriesThreeWarrantMember_lbl_f953005aa48e4989868f10179610dea2" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SeriesThreeWarrantMember_lbl_f953005aa48e4989868f10179610dea2" xml:lang="en-US">Series 3 warrant [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_December12018Member" xlink:label="ipix_December12018Member" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_December12018Member" xlink:to="ipix_December12018Member_lbl_c170360ddcc54fb09c22185bf567d643" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_December12018Member_lbl_c170360ddcc54fb09c22185bf567d643" xml:lang="en-US">December 1, 2018 [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_June12019Member" xlink:label="ipix_June12019Member" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_June12019Member" xlink:to="ipix_June12019Member_lbl_c0bceddcc02c4ccaaf49fc96e4244c7a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_June12019Member_lbl_c0bceddcc02c4ccaaf49fc96e4244c7a" xml:lang="en-US">June 1, 2019 [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_December12019Member" xlink:label="ipix_December12019Member" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_December12019Member" xlink:to="ipix_December12019Member_lbl_9562a6c661434ab3b4f24d8104dcbdd1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_December12019Member_lbl_9562a6c661434ab3b4f24d8104dcbdd1" xml:lang="en-US">December 1, 2019 [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_OnFebruary12018Member" xlink:label="ipix_OnFebruary12018Member" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_OnFebruary12018Member" xlink:to="ipix_OnFebruary12018Member_lbl_7e716eccf915449eaa6f7a7f5b2dd5f7" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_OnFebruary12018Member_lbl_7e716eccf915449eaa6f7a7f5b2dd5f7" xml:lang="en-US">On February 1, 2018 [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ConsultantMember" xlink:label="ipix_ConsultantMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConsultantMember" xlink:to="ipix_ConsultantMember_lbl_636ab33fdca3485582a481d2e978e175" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ConsultantMember_lbl_636ab33fdca3485582a481d2e978e175" xml:lang="en-US">Consultant [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_OnFebruary102018Member" xlink:label="ipix_OnFebruary102018Member" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_OnFebruary102018Member" xlink:to="ipix_OnFebruary102018Member_lbl_56648bf2c5db4a01af5944beaf60d7da" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_OnFebruary102018Member_lbl_56648bf2c5db4a01af5944beaf60d7da" xml:lang="en-US">On February 10, 2018 [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_TwoConsultantMember" xlink:label="ipix_TwoConsultantMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_TwoConsultantMember" xlink:to="ipix_TwoConsultantMember_lbl_7f3bbe8acbf74736bc7a4216a4a8ece4" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_TwoConsultantMember_lbl_7f3bbe8acbf74736bc7a4216a4a8ece4" xml:lang="en-US">Two Consultant [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SeriesFourWarrantMember" xlink:label="ipix_SeriesFourWarrantMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SeriesFourWarrantMember" xlink:to="ipix_SeriesFourWarrantMember_lbl_7aa4546747fa42e39e233e7e1d5acf07" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SeriesFourWarrantMember_lbl_7aa4546747fa42e39e233e7e1d5acf07" xml:lang="en-US">Series 4 warrant [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensation" xlink:to="us-gaap_ShareBasedCompensation_lbl_6accb36c9c804a619521b0ca5115624f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensation_lbl_6accb36c9c804a619521b0ca5115624f" xml:lang="en-US">Share based compensation</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_RestrictedStockAwards" xlink:label="ipix_RestrictedStockAwards" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_RestrictedStockAwards" xlink:to="ipix_RestrictedStockAwards_lbl_2898af82f56c4ec4ba35f7da68c4a5a7" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_RestrictedStockAwards_lbl_2898af82f56c4ec4ba35f7da68c4a5a7" xml:lang="en-US">Restricted stock awards</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockShares" xlink:to="us-gaap_TreasuryStockShares_lbl_900eca330ae844a5b6e0e03e102bf4c8" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TreasuryStockShares_lbl_900eca330ae844a5b6e0e03e102bf4c8" xml:lang="en-US">Treasury stock outstanding</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ExplorationCostsCumulative" xlink:label="us-gaap_ExplorationCostsCumulative" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ExplorationCostsCumulative" xlink:to="us-gaap_ExplorationCostsCumulative_lbl_65e8f233aaa74d73bb4c96eb84b26e07" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ExplorationCostsCumulative_lbl_65e8f233aaa74d73bb4c96eb84b26e07" xml:lang="en-US">Total cumulative cost</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl_8f01d653672540fda34fefb297132765" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl_8f01d653672540fda34fefb297132765" xml:lang="en-US">Unrecognized compensation cost related to unvested restricted stock-based compensation</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl_a84d643c887640dc9d3dfe2471aefe40" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl_a84d643c887640dc9d3dfe2471aefe40" xml:lang="en-US">Compensation cost not yet recognized, period for recognition</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllocatedShareBasedCompensationExpense" xlink:to="us-gaap_AllocatedShareBasedCompensationExpense_lbl_4300227dfee945ef93899f9bace7015f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl_4300227dfee945ef93899f9bace7015f" xml:lang="en-US">Expected share based compensation expenses</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation" xlink:label="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation" xlink:to="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_lbl_35360d2eefa64dd28a229ab44f7284eb" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_lbl_35360d2eefa64dd28a229ab44f7284eb" xml:lang="en-US">Stock options to purchase shares, value</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SharesAwardExpense" xlink:label="ipix_SharesAwardExpense" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SharesAwardExpense" xlink:to="ipix_SharesAwardExpense_lbl_3e4c216273bb46c390bc54f69bdf51a4" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SharesAwardExpense_lbl_3e4c216273bb46c390bc54f69bdf51a4" xml:lang="en-US">Shares award expense</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_lbl_4f2e491b43ba4fffafe8f7a68cf82ee4" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_lbl_4f2e491b43ba4fffafe8f7a68cf82ee4" xml:lang="en-US">Options vested or expected to vest</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_PreferredStockSharesOutstandingInShares" xlink:to="ipix_PreferredStockSharesOutstandingInShares_lbl_01f471a9fbd14b29b0c58b02a2fc1ce0" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_PreferredStockSharesOutstandingInShares_lbl_01f471a9fbd14b29b0c58b02a2fc1ce0" xml:lang="en-US">Preferred stock, shares outstanding (in shares)</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_PreferredStockSharesOutstandingInShares" xlink:label="ipix_PreferredStockSharesOutstandingInShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_PreferredStockSharesOutstandingInShares" xlink:to="ipix_PreferredStockSharesOutstandingInShares_lbl_12" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_PreferredStockSharesOutstandingInShares_lbl_12" xml:lang="en-US">[Preferred stock, shares outstanding (in shares)]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockOptionPlanExpense" xlink:label="us-gaap_StockOptionPlanExpense" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockOptionPlanExpense" xlink:to="us-gaap_StockOptionPlanExpense_lbl_af3c33d0a32848b7b2403e3d17fe02f1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockOptionPlanExpense_lbl_af3c33d0a32848b7b2403e3d17fe02f1" xml:lang="en-US">Stock option expenses</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfWarrantOrRightOutstanding" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightOutstanding" xlink:to="us-gaap_ClassOfWarrantOrRightOutstanding_lbl_b91f8b4b1f854f2ea11ecf7fd6b0d8f5" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl_b91f8b4b1f854f2ea11ecf7fd6b0d8f5" xml:lang="en-US">Purchase of warrants</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_NumberOfWarrantsExercised" xlink:label="ipix_NumberOfWarrantsExercised" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_NumberOfWarrantsExercised" xlink:to="ipix_NumberOfWarrantsExercised_lbl_0b5c8b0ef1c84023b6501a4da7bd908a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_NumberOfWarrantsExercised_lbl_0b5c8b0ef1c84023b6501a4da7bd908a" xml:lang="en-US">Number of warrants exercised</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromWarrantExercises" xlink:to="us-gaap_ProceedsFromWarrantExercises_lbl_b9be293fd86e4cd78bf6ea1e75fb2e87" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromWarrantExercises_lbl_b9be293fd86e4cd78bf6ea1e75fb2e87" xml:lang="en-US">Proceeds from warrant exercises</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl_48dcb80036d4480c813000f748b227ec" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl_48dcb80036d4480c813000f748b227ec" xml:lang="en-US">Stock issued during period, shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ExercisablePeriod" xlink:label="ipix_ExercisablePeriod" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ExercisablePeriod" xlink:to="ipix_ExercisablePeriod_lbl_0df2a258617c40879619fb02795f8d07" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ExercisablePeriod_lbl_0df2a258617c40879619fb02795f8d07" xml:lang="en-US">Exercisable period</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_StockOptionVestedDescription" xlink:label="ipix_StockOptionVestedDescription" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_StockOptionVestedDescription" xlink:to="ipix_StockOptionVestedDescription_lbl_92f840b6e55f49a7840512e2753a463e" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_StockOptionVestedDescription_lbl_92f840b6e55f49a7840512e2753a463e" xml:lang="en-US">Stock option vested or to be vested, description</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:to="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl_81aab066db69416586f010be6fec196a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl_81aab066db69416586f010be6fec196a" xml:lang="en-US">Stock options reserved for future issuance</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:to="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl_9be904643b924762ac2213d15b232cba" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl_9be904643b924762ac2213d15b232cba" xml:lang="en-US">Stock option exercise price</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesOther" xlink:label="us-gaap_StockIssuedDuringPeriodSharesOther" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesOther" xlink:to="us-gaap_StockIssuedDuringPeriodSharesOther_lbl_f1fa099c59734d4a81a42f66ce1eff7a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesOther_lbl_f1fa099c59734d4a81a42f66ce1eff7a" xml:lang="en-US">Stock issued, shares</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueOther" xlink:label="us-gaap_StockIssuedDuringPeriodValueOther" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueOther" xlink:to="us-gaap_StockIssuedDuringPeriodValueOther_lbl_ccc0450f2cd14faeb7a2bb6c1181ad2a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueOther_lbl_ccc0450f2cd14faeb7a2bb6c1181ad2a" xml:lang="en-US">Stock issued, value</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedStockSharesIssuedNetOfSharesForTaxWithholdings" xlink:label="us-gaap_RestrictedStockSharesIssuedNetOfSharesForTaxWithholdings" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockSharesIssuedNetOfSharesForTaxWithholdings" xlink:to="us-gaap_RestrictedStockSharesIssuedNetOfSharesForTaxWithholdings_lbl_62f63494496943f79cb42a722b474070" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedStockSharesIssuedNetOfSharesForTaxWithholdings_lbl_62f63494496943f79cb42a722b474070" xml:lang="en-US">Restricted stock shares issued</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_TaxableShareBasedCompensation" xlink:label="ipix_TaxableShareBasedCompensation" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_TaxableShareBasedCompensation" xlink:to="ipix_TaxableShareBasedCompensation_lbl_2bac48a46cba47c397c97d348a35ef05" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_TaxableShareBasedCompensation_lbl_2bac48a46cba47c397c97d348a35ef05" xml:lang="en-US">Taxable share based compensation</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ClosingStockPricePerShare" xlink:to="ipix_ClosingStockPricePerShare_lbl_c890137dec234e87abe5af274ae7da05" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_ClosingStockPricePerShare_lbl_c890137dec234e87abe5af274ae7da05" xml:lang="en-US">Closing stock price</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ClosingStockPricePerShare" xlink:label="ipix_ClosingStockPricePerShare" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ClosingStockPricePerShare" xlink:to="ipix_ClosingStockPricePerShare_lbl_26" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ClosingStockPricePerShare_lbl_26" xml:lang="en-US">[Closing stock price]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_lbl_f9e0076bb6c8482f8c935dfa42d69e6e" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockSharesIssued_lbl_f9e0076bb6c8482f8c935dfa42d69e6e" xml:lang="en-US">Common stock shares issued</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_RemainingCommonStockSharesWithhelds" xlink:label="ipix_RemainingCommonStockSharesWithhelds" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_RemainingCommonStockSharesWithhelds" xlink:to="ipix_RemainingCommonStockSharesWithhelds_lbl_97b193582aca40889a01f528a8c47109" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_RemainingCommonStockSharesWithhelds_lbl_97b193582aca40889a01f528a8c47109" xml:lang="en-US">Remaining common stock shares withheld</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_lbl_8dbae8f5b05349c587f02d13a7b55bb1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_lbl_8dbae8f5b05349c587f02d13a7b55bb1" xml:lang="en-US">Vesting percentage</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesOther" xlink:to="us-gaap_StockIssuedDuringPeriodSharesOther_lbl_6fc63289d1784d8c95c9a35c040cc1c1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesOther_lbl_6fc63289d1784d8c95c9a35c040cc1c1" xml:lang="en-US">Vested shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_RightsAndPreferencesOfPreferredStockDescription" xlink:label="ipix_RightsAndPreferencesOfPreferredStockDescription" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_RightsAndPreferencesOfPreferredStockDescription" xlink:to="ipix_RightsAndPreferencesOfPreferredStockDescription_lbl_58937da1f4ed4009a84f36ea493df328" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_RightsAndPreferencesOfPreferredStockDescription_lbl_58937da1f4ed4009a84f36ea493df328" xml:lang="en-US">Rights and preferences of preferred stock description</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:label="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:to="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl_c30d074c39aa4090a1bd417336c365c2" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl_c30d074c39aa4090a1bd417336c365c2" xml:lang="en-US">Proceeds from issuance of shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AdditionalSharesOfPreferredStock" xlink:label="ipix_AdditionalSharesOfPreferredStock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AdditionalSharesOfPreferredStock" xlink:to="ipix_AdditionalSharesOfPreferredStock_lbl_1969869f32f843d895b1ee865606876c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AdditionalSharesOfPreferredStock_lbl_1969869f32f843d895b1ee865606876c" xml:lang="en-US">Additional shares of preferred stock</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesIssued" xlink:to="us-gaap_PreferredStockSharesIssued_lbl_cf4547eb4d9d40b4b646a424717de6db" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockSharesIssued_lbl_cf4547eb4d9d40b4b646a424717de6db" xml:lang="en-US">Preferred stock shares issued</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedStockAwardForfeituresDividends" xlink:label="us-gaap_RestrictedStockAwardForfeituresDividends" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockAwardForfeituresDividends" xlink:to="us-gaap_RestrictedStockAwardForfeituresDividends_lbl_23483294e9944817b8ab44086d0e048c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedStockAwardForfeituresDividends_lbl_23483294e9944817b8ab44086d0e048c" xml:lang="en-US">Stock awards</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_RestrictedStock" xlink:label="ipix_RestrictedStock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_RestrictedStock" xlink:to="ipix_RestrictedStock_lbl_df8e4dfd862e46d1aac942861b917870" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_RestrictedStock_lbl_df8e4dfd862e46d1aac942861b917870" xml:lang="en-US">Restricted stock</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_StockOptionVestedOrToBeVestedDescription" xlink:to="ipix_StockOptionVestedOrToBeVestedDescription_lbl_64e652154fc249bc804bdc16856cb1bc" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_StockOptionVestedOrToBeVestedDescription_lbl_64e652154fc249bc804bdc16856cb1bc" xml:lang="en-US">Stock option vested or to be vested, description</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_StockOptionVestedOrToBeVestedDescription" xlink:label="ipix_StockOptionVestedOrToBeVestedDescription" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_StockOptionVestedOrToBeVestedDescription" xlink:to="ipix_StockOptionVestedOrToBeVestedDescription_lbl_37" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_StockOptionVestedOrToBeVestedDescription_lbl_37" xml:lang="en-US">[Stock option vested or to be vested, description]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_NumberOfInstallments" xlink:label="ipix_NumberOfInstallments" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_NumberOfInstallments" xlink:to="ipix_NumberOfInstallments_lbl_2367f413ac2241cca13828bebc8a8001" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_NumberOfInstallments_lbl_2367f413ac2241cca13828bebc8a8001" xml:lang="en-US">Number of installments</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross" xlink:label="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross" xlink:to="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross_lbl_35da041ed7364f5db057028a30b32aae" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross_lbl_35da041ed7364f5db057028a30b32aae" xml:lang="en-US">Stock options granted value</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl_3f073b92ad7e4325a51e15a2f8e76af2" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl_3f073b92ad7e4325a51e15a2f8e76af2" xml:lang="en-US">Stock option Granted</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_lbl_c61967ba604d4ae59fc391d1dc9f1739" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_lbl_c61967ba604d4ae59fc391d1dc9f1739" xml:lang="en-US">Exercise price</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_StockOptionsValueReservedForFutureIssuance" xlink:label="ipix_StockOptionsValueReservedForFutureIssuance" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_StockOptionsValueReservedForFutureIssuance" xlink:to="ipix_StockOptionsValueReservedForFutureIssuance_lbl_db642daaa39149a282c5e4b97153c505" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_StockOptionsValueReservedForFutureIssuance_lbl_db642daaa39149a282c5e4b97153c505" xml:lang="en-US">Stock options value reserved for future issuance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_InvestmentOptionsExercisePrice" xlink:to="ipix_InvestmentOptionsExercisePrice_lbl_16ff474723b248c39b4f055dc05c8dad" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_InvestmentOptionsExercisePrice_lbl_16ff474723b248c39b4f055dc05c8dad" xml:lang="en-US">Exercise price</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_InvestmentOptionsExercisePrice" xlink:label="ipix_InvestmentOptionsExercisePrice" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_InvestmentOptionsExercisePrice" xlink:to="ipix_InvestmentOptionsExercisePrice_lbl_45" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_InvestmentOptionsExercisePrice_lbl_45" xml:lang="en-US">[Exercise price]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl_cef7ee34673e409392c00bc788e8098c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl_cef7ee34673e409392c00bc788e8098c" xml:lang="en-US">Warrants exercisable period</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ClosingStockPrice" xlink:label="ipix_ClosingStockPrice" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ClosingStockPrice" xlink:to="ipix_ClosingStockPrice_lbl_5534593d64c54b24b37f0f2656c7502b" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ClosingStockPrice_lbl_5534593d64c54b24b37f0f2656c7502b" xml:lang="en-US">Closing stock price</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_RemainingCommonStockSharesWithheld" xlink:to="ipix_RemainingCommonStockSharesWithheld_lbl_2ce5a58534834285aa9524075cb89a52" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_RemainingCommonStockSharesWithheld_lbl_2ce5a58534834285aa9524075cb89a52" xml:lang="en-US">Remaining common stock shares withheld</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_RemainingCommonStockSharesWithheld" xlink:label="ipix_RemainingCommonStockSharesWithheld" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_RemainingCommonStockSharesWithheld" xlink:to="ipix_RemainingCommonStockSharesWithheld_lbl_48" xlink:type="arc" />
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_VestedShares" xlink:to="ipix_VestedShares_lbl_868c6655dc7c49f7be4d1383338e4930" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_VestedShares_lbl_868c6655dc7c49f7be4d1383338e4930" xml:lang="en-US">Vested shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_VestedShares" xlink:label="ipix_VestedShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_VestedShares" xlink:to="ipix_VestedShares_lbl_49" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_VestedShares_lbl_49" xml:lang="en-US">[Vested shares]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssued" xlink:to="us-gaap_SharesIssued_lbl_11f9f60f56d44afabfe2e612a93e1af4" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SharesIssued_lbl_11f9f60f56d44afabfe2e612a93e1af4" xml:lang="en-US">Beginning balance, Shares</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfWarrants" xlink:to="us-gaap_ProceedsFromIssuanceOfWarrants_lbl_c73eede8b16644a49c1bfb9285307164" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfWarrants_lbl_c73eede8b16644a49c1bfb9285307164" xml:lang="en-US">Proceeds from issuance of warrants</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_CommonStockSharesIssuableUnderAgreement" xlink:label="ipix_CommonStockSharesIssuableUnderAgreement" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_CommonStockSharesIssuableUnderAgreement" xlink:to="ipix_CommonStockSharesIssuableUnderAgreement_lbl_82f6aa4ab7eb461fac788d197a2276fa" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_CommonStockSharesIssuableUnderAgreement_lbl_82f6aa4ab7eb461fac788d197a2276fa" xml:lang="en-US">Common stock shares issuable under agreement</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedInPeriod" xlink:to="ipix_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedInPeriod_lbl_05e0e9e0c1f349e5bd6b12c43514f1e1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ipix_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedInPeriod_lbl_05e0e9e0c1f349e5bd6b12c43514f1e1" xml:lang="en-US">Exercised</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance" xlink:label="us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance" xlink:to="us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance_lbl_5d1c236f8fc84b87b0a8bf671890c69a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance_lbl_5d1c236f8fc84b87b0a8bf671890c69a" xml:lang="en-US">Preferred stock shares reserved for future issuance</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_EquityTransactionsDetailsNarrativeAbstract" xlink:label="ipix_EquityTransactionsDetailsNarrativeAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_EquityTransactionsDetailsNarrativeAbstract" xlink:to="ipix_EquityTransactionsDetailsNarrativeAbstract_lbl_7979ea989f6147118499ddacbc481f0c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_EquityTransactionsDetailsNarrativeAbstract_lbl_7979ea989f6147118499ddacbc481f0c" xml:lang="en-US">Equity Transactions (Details Narrative)</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_StockAndWarrantMember" xlink:label="ipix_StockAndWarrantMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_StockAndWarrantMember" xlink:to="ipix_StockAndWarrantMember_lbl_b68be976684344bc9b0da56b8ef1d634" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_StockAndWarrantMember_lbl_b68be976684344bc9b0da56b8ef1d634" xml:lang="en-US">Stock And Warrant [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AspireCapitalFundLlcMember" xlink:to="ipix_AspireCapitalFundLlcMember_lbl_a024043901d8442e8abbbf3830898a75" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_AspireCapitalFundLlcMember_lbl_a024043901d8442e8abbbf3830898a75" xml:lang="en-US">Aspire Capital Fund LLC [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonClassAMember" xlink:to="us-gaap_CommonClassAMember_lbl_3690bff18f2f4a7ba0804c508db77379" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonClassAMember_lbl_3690bff18f2f4a7ba0804c508db77379" xml:lang="en-US">Common Class A</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_CommonStockPurchaseAgreementFourMember" xlink:label="ipix_CommonStockPurchaseAgreementFourMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_CommonStockPurchaseAgreementFourMember" xlink:to="ipix_CommonStockPurchaseAgreementFourMember_lbl_f9f5754e163e469d9a04518ce86b3bb4" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_CommonStockPurchaseAgreementFourMember_lbl_f9f5754e163e469d9a04518ce86b3bb4" xml:lang="en-US">30 Million Common Stock Purchase Agreement [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_NewCommonStockPurchaseAgreementFourMember" xlink:label="ipix_NewCommonStockPurchaseAgreementFourMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_NewCommonStockPurchaseAgreementFourMember" xlink:to="ipix_NewCommonStockPurchaseAgreementFourMember_lbl_c91273ae3a6c4105bcf3c409cbfe662c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_NewCommonStockPurchaseAgreementFourMember_lbl_c91273ae3a6c4105bcf3c409cbfe662c" xml:lang="en-US">New 30 Million Common Stock Purchase Agreement [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesTreasuryStock" xlink:to="us-gaap_WeightedAverageNumberOfSharesTreasuryStock_lbl_aae229f026244eb4adfcb6c75a86f39a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesTreasuryStock_lbl_aae229f026244eb4adfcb6c75a86f39a" xml:lang="en-US">Treasury stock outstanding</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesTreasuryStock" xlink:label="us-gaap_WeightedAverageNumberOfSharesTreasuryStock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesTreasuryStock" xlink:to="us-gaap_WeightedAverageNumberOfSharesTreasuryStock_lbl_3" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfSharesTreasuryStock_lbl_3" xml:lang="en-US">[Weighted Average Number of Shares, Treasury Stock]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredOfferingCosts" xlink:to="us-gaap_DeferredOfferingCosts_lbl_b96fa0cc0c8747439b3c0b73dca5d6e6" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DeferredOfferingCosts_lbl_b96fa0cc0c8747439b3c0b73dca5d6e6" xml:lang="en-US">Deferred offering costs</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_CommonStocksSharesPurchase" xlink:to="ipix_CommonStocksSharesPurchase_lbl_873c987f44f440a189614bb9bb213128" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_CommonStocksSharesPurchase_lbl_873c987f44f440a189614bb9bb213128" xml:lang="en-US">Common stock shares issued upon extinguishment of debt</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_DebtCancellation" xlink:to="ipix_DebtCancellation_lbl_242f0c8488f94aaab25064b9948f2992" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_DebtCancellation_lbl_242f0c8488f94aaab25064b9948f2992" xml:lang="en-US">Amount of debt extinguished</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharePrice" xlink:to="us-gaap_SharePrice_lbl_d781508a5fc64b809abf0ce0a10b2e66" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SharePrice_lbl_d781508a5fc64b809abf0ce0a10b2e66" xml:lang="en-US">Exercise price</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharePrice" xlink:label="us-gaap_SharePrice" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharePrice" xlink:to="us-gaap_SharePrice_lbl_7" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharePrice_lbl_7" xml:lang="en-US">[Share Price]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl_a8dac85645ba47439e6fc80614756a50" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl_a8dac85645ba47439e6fc80614756a50" xml:lang="en-US">Common stock shares issued</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalOther" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalOther" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalOther" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalOther_lbl_470b858bc8cc4c8bbade0e15690f2318" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalOther_lbl_470b858bc8cc4c8bbade0e15690f2318" xml:lang="en-US">Commitment fee recorded to additional paid in capital</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:to="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl_c4dbb8e87656409f8ffa2e2f04051b7a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl_c4dbb8e87656409f8ffa2e2f04051b7a" xml:lang="en-US">Common stock shares reserve for future issuance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare_lbl_1bc425c9a4314b5baa11cb30af50e87d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl_1bc425c9a4314b5baa11cb30af50e87d" xml:lang="en-US">Common Stock, par value (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesOutstanding" xlink:to="us-gaap_CommonStockSharesOutstanding_lbl_4ba0617c45a846a587c59678550bd254" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl_4ba0617c45a846a587c59678550bd254" xml:lang="en-US">Common Stock, shares outstanding (in shares)</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_TermOfPurchaseAgreement" xlink:label="ipix_TermOfPurchaseAgreement" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_TermOfPurchaseAgreement" xlink:to="ipix_TermOfPurchaseAgreement_lbl_15aa33e0156047908a887ef5e760f6e1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_TermOfPurchaseAgreement_lbl_15aa33e0156047908a887ef5e760f6e1" xml:lang="en-US">Term of the purchase agreement</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:to="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl_a39a67fbcc924893866e994ad6eb2f45" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl_a39a67fbcc924893866e994ad6eb2f45" xml:lang="en-US">Common stock shares sold</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction" xlink:label="us-gaap_SaleOfStockConsiderationReceivedOnTransaction" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleOfStockConsiderationReceivedOnTransaction" xlink:to="us-gaap_SaleOfStockConsiderationReceivedOnTransaction_lbl_774621918bb744f29fdfd580746caddb" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SaleOfStockConsiderationReceivedOnTransaction_lbl_774621918bb744f29fdfd580746caddb" xml:lang="en-US">Proceeds from issuance of common stock</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ValueOfCommonStockSharesIssuedOrIssuableUnderAgreement" xlink:label="ipix_ValueOfCommonStockSharesIssuedOrIssuableUnderAgreement" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ValueOfCommonStockSharesIssuedOrIssuableUnderAgreement" xlink:to="ipix_ValueOfCommonStockSharesIssuedOrIssuableUnderAgreement_lbl_33c98dac270b4a8797862645d1502109" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ValueOfCommonStockSharesIssuedOrIssuableUnderAgreement_lbl_33c98dac270b4a8797862645d1502109" xml:lang="en-US">Value of common stock shares issuable under agreement</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AmortizationOfCommitmentFeeAmountAmortized" xlink:label="ipix_AmortizationOfCommitmentFeeAmountAmortized" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AmortizationOfCommitmentFeeAmountAmortized" xlink:to="ipix_AmortizationOfCommitmentFeeAmountAmortized_lbl_47c313fe34e744f6b4c63c6e5166ab45" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AmortizationOfCommitmentFeeAmountAmortized_lbl_47c313fe34e744f6b4c63c6e5166ab45" xml:lang="en-US">Amortization of commitment fee, Amount amortized</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_DescriptionForSatisfactionOfTradingPriceCondition" xlink:label="ipix_DescriptionForSatisfactionOfTradingPriceCondition" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_DescriptionForSatisfactionOfTradingPriceCondition_lbl_8c44fbd8596a44b29c0a056a82145f30" xml:lang="en-US">Description for satisfaction of trading price condition</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AllocationOfCommitmentFeeDescription" xlink:label="ipix_AllocationOfCommitmentFeeDescription" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AllocationOfCommitmentFeeDescription" xlink:to="ipix_AllocationOfCommitmentFeeDescription_lbl_d479348c814c4a948d06fa014f5255ce" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AllocationOfCommitmentFeeDescription_lbl_d479348c814c4a948d06fa014f5255ce" xml:lang="en-US">Allocation of commitment fee description</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SeriesB5ConvertiblePreferredStockDetailsAbstract" xlink:label="ipix_SeriesB5ConvertiblePreferredStockDetailsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SeriesB5ConvertiblePreferredStockDetailsAbstract" xlink:to="ipix_SeriesB5ConvertiblePreferredStockDetailsAbstract_lbl_bf5c4e60b5b84a4aad72e15f554ff94a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SeriesB5ConvertiblePreferredStockDetailsAbstract_lbl_bf5c4e60b5b84a4aad72e15f554ff94a" xml:lang="en-US">Series B 5 convertible preferred stock (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ExpectedDividendYield" xlink:to="ipix_ExpectedDividendYield_lbl_ec6f6f562d2d4f4199d529daccc18edd" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_ExpectedDividendYield_lbl_ec6f6f562d2d4f4199d529daccc18edd" xml:lang="en-US">Expected dividend yield</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ExpectedDividendYield" xlink:label="ipix_ExpectedDividendYield" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ExpectedDividendYield" xlink:to="ipix_ExpectedDividendYield_lbl_2" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ExpectedDividendYield_lbl_2" xml:lang="en-US">[Expected dividend yield]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ExpectedStockPriceVolatility" xlink:label="ipix_ExpectedStockPriceVolatility" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ExpectedStockPriceVolatility" xlink:to="ipix_ExpectedStockPriceVolatility_lbl_e667c5c133374b5ca2f9ad5cc8e9d110" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ExpectedStockPriceVolatility_lbl_e667c5c133374b5ca2f9ad5cc8e9d110" xml:lang="en-US">Expected stock-price volatility</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_RiskFreeInterestRate" xlink:to="ipix_RiskFreeInterestRate_lbl_d1c9aa25bdbd4f0f959f8432e52777ca" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_RiskFreeInterestRate_lbl_d1c9aa25bdbd4f0f959f8432e52777ca" xml:lang="en-US">Risk-free interest rate</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_RiskFreeInterestRate" xlink:label="ipix_RiskFreeInterestRate" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_RiskFreeInterestRate" xlink:to="ipix_RiskFreeInterestRate_lbl_4" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_RiskFreeInterestRate_lbl_4" xml:lang="en-US">[Risk-free interest rate]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ExpectedTermOfWarrantsYears" xlink:label="ipix_ExpectedTermOfWarrantsYears" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ExpectedTermOfWarrantsYears" xlink:to="ipix_ExpectedTermOfWarrantsYears_lbl_fc51da82870d4b2683a70669d734852a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ExpectedTermOfWarrantsYears_lbl_fc51da82870d4b2683a70669d734852a" xml:lang="en-US">Expected term of warrants (years)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharePrice" xlink:to="us-gaap_SharePrice_lbl_2544b6190860496f9ce70db3dce56d14" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharePrice_lbl_2544b6190860496f9ce70db3dce56d14" xml:lang="en-US">Stock price</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_lbl_e49348cefddf464aba8b8072a60c749e" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_lbl_e49348cefddf464aba8b8072a60c749e" xml:lang="en-US">Exercise price</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_lbl_7" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_lbl_7" xml:lang="en-US">[Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_SeriesB5ConvertiblePreferredStockDetailsNarrativeAbstract" xlink:label="ipix_SeriesB5ConvertiblePreferredStockDetailsNarrativeAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_SeriesB5ConvertiblePreferredStockDetailsNarrativeAbstract" xlink:to="ipix_SeriesB5ConvertiblePreferredStockDetailsNarrativeAbstract_lbl_71cda9a0a2344f7882027e87a93cb64d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_SeriesB5ConvertiblePreferredStockDetailsNarrativeAbstract_lbl_71cda9a0a2344f7882027e87a93cb64d" xml:lang="en-US">Series B 5 convertible preferred stock (Details Narrative)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_OnSeptemberOneTwoThousandEighteenMember" xlink:to="ipix_OnSeptemberOneTwoThousandEighteenMember_lbl_bd1fdb510ded4b1bbaccfb5af6d71927" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_OnSeptemberOneTwoThousandEighteenMember_lbl_bd1fdb510ded4b1bbaccfb5af6d71927" xml:lang="en-US">On September 1, 2018 [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_MsJaneHarnessMember" xlink:to="ipix_MsJaneHarnessMember_lbl_ff21b66cc3fe4a309bd4075d74e21a19" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_MsJaneHarnessMember_lbl_ff21b66cc3fe4a309bd4075d74e21a19" xml:lang="en-US">Ms. Jane Harness [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeriesBMember" xlink:to="us-gaap_SeriesBMember_lbl_3543f8b9ed884aa8ad281bc45b98f4bc" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SeriesBMember_lbl_3543f8b9ed884aa8ad281bc45b98f4bc" xml:lang="en-US">Series B [Member]</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeriesBPreferredStockMember" xlink:label="us-gaap_SeriesBPreferredStockMember" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeriesBPreferredStockMember" xlink:to="us-gaap_SeriesBPreferredStockMember_lbl_17f103c3656b452eb786c6e503091752" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SeriesBPreferredStockMember_lbl_17f103c3656b452eb786c6e503091752" xml:lang="en-US">Series B Preferred Stock [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:to="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl_8120407ba92349548b66263c212e822c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl_8120407ba92349548b66263c212e822c" xml:lang="en-US">Proceeds from issuance of shares</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ProceedsFromWarrantExercise" xlink:to="ipix_ProceedsFromWarrantExercise_lbl_6a158915f4704aa6b934613d4770d862" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_ProceedsFromWarrantExercise_lbl_6a158915f4704aa6b934613d4770d862" xml:lang="en-US">Proceeds from warrant exercises</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ProceedsFromWarrantExercise" xlink:label="ipix_ProceedsFromWarrantExercise" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ProceedsFromWarrantExercise" xlink:to="ipix_ProceedsFromWarrantExercise_lbl_3" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ProceedsFromWarrantExercise_lbl_3" xml:lang="en-US">[Proceeds from warrant exercises]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ConversionOfPreferredStockToCommonStockDescription" xlink:label="ipix_ConversionOfPreferredStockToCommonStockDescription" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConversionOfPreferredStockToCommonStockDescription" xlink:to="ipix_ConversionOfPreferredStockToCommonStockDescription_lbl_fa7ac717db8f469c9f7159e1d3214be9" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ConversionOfPreferredStockToCommonStockDescription_lbl_fa7ac717db8f469c9f7159e1d3214be9" xml:lang="en-US">Conversion of preferred stock to common stock description</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConversionOfSeriesBConvertiblePreferredStockToCommonStock" xlink:to="ipix_ConversionOfSeriesBConvertiblePreferredStockToCommonStock_lbl_07d55017926e4496a28285c97779e65c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_ConversionOfSeriesBConvertiblePreferredStockToCommonStock_lbl_07d55017926e4496a28285c97779e65c" xml:lang="en-US">Conversion of Series B Convertible Preferred stock to Common stock, reversed</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DividendsPreferredStockStock" xlink:label="us-gaap_DividendsPreferredStockStock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPreferredStockStock" xlink:to="us-gaap_DividendsPreferredStockStock_lbl_4e53c99b2ce74a48b449fa9d7419f30e" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPreferredStockStock_lbl_4e53c99b2ce74a48b449fa9d7419f30e" xml:lang="en-US">Amount of series B preferred stock dividends paid</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DividendsPreferredStock" xlink:label="us-gaap_DividendsPreferredStock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPreferredStock" xlink:to="us-gaap_DividendsPreferredStock_lbl_8949cbd46dff430ea9a477098e3cde8c" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPreferredStock_lbl_8949cbd46dff430ea9a477098e3cde8c" xml:lang="en-US">5% accrued dividend</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AccruedDividend" xlink:to="ipix_AccruedDividend_lbl_756da1fb39204783b6e743500dda6dee" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_AccruedDividend_lbl_756da1fb39204783b6e743500dda6dee" xml:lang="en-US">5% accrued dividend</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_AccruedDividend" xlink:label="ipix_AccruedDividend" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AccruedDividend" xlink:to="ipix_AccruedDividend_lbl_8" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_AccruedDividend_lbl_8" xml:lang="en-US">[5% accrued dividend]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssued" xlink:to="us-gaap_SharesIssued_lbl_909d1e43430340578e19210ea8736b5f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharesIssued_lbl_909d1e43430340578e19210ea8736b5f" xml:lang="en-US">Beginning balance, Shares</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_StockIssuedDescription" xlink:label="ipix_StockIssuedDescription" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_StockIssuedDescription" xlink:to="ipix_StockIssuedDescription_lbl_9b3e048afdc845e4b5008a4614befb4f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_StockIssuedDescription_lbl_9b3e048afdc845e4b5008a4614befb4f" xml:lang="en-US">Stock issued description</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_WarrantsToPurchaseShares" xlink:label="ipix_WarrantsToPurchaseShares" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_WarrantsToPurchaseShares" xlink:to="ipix_WarrantsToPurchaseShares_lbl_7eb783cd6454475cafdb2a1a167c3db2" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_WarrantsToPurchaseShares_lbl_7eb783cd6454475cafdb2a1a167c3db2" xml:lang="en-US">Warrants to purchase additional shares</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_RightsAndPreferencesOfPreferredStockDescription" xlink:to="ipix_RightsAndPreferencesOfPreferredStockDescription_lbl_668e7386009b4fdbacb224b74b45cab5" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_RightsAndPreferencesOfPreferredStockDescription_lbl_668e7386009b4fdbacb224b74b45cab5" xml:lang="en-US">Rights and preferences of the preferred stock description</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ConversionCapLimitsDescription" xlink:label="ipix_ConversionCapLimitsDescription" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConversionCapLimitsDescription" xlink:to="ipix_ConversionCapLimitsDescription_lbl_2b6169abe4d5468c863784145d236180" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ConversionCapLimitsDescription_lbl_2b6169abe4d5468c863784145d236180" xml:lang="en-US">Conversion cap limits description</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_WarrantsIssued" xlink:to="ipix_WarrantsIssued_lbl_0b699d6e181c46e29001d0b259200848" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_WarrantsIssued_lbl_0b699d6e181c46e29001d0b259200848" xml:lang="en-US">Number of warrants exercised</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_WarrantsIssued" xlink:label="ipix_WarrantsIssued" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_WarrantsIssued" xlink:to="ipix_WarrantsIssued_lbl_14" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_WarrantsIssued_lbl_14" xml:lang="en-US">[Number of warrants exercised]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl_b12166197e9d459d87d50f40d194d468" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl_b12166197e9d459d87d50f40d194d468" xml:lang="en-US">Stock issued during period, shares</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl_fe876f17f62f495a88be43718a130171" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl_fe876f17f62f495a88be43718a130171" xml:lang="en-US">Stock issued during period, value</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature" xlink:label="us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature" xlink:to="us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature_lbl_d33e0be60c6643ca980b5c08fadade85" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature_lbl_d33e0be60c6643ca980b5c08fadade85" xml:lang="en-US">Beneficial conversion feature</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfStockIssuanceCosts" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfStockIssuanceCosts" xlink:to="us-gaap_PaymentsOfStockIssuanceCosts_lbl_63eec14be1074d1db913b55b293941f2" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl_63eec14be1074d1db913b55b293941f2" xml:lang="en-US">Stock issuance cost</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesOutstanding" xlink:to="us-gaap_PreferredStockSharesOutstanding_lbl_636b35758624465987da1841098fa40f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl_636b35758624465987da1841098fa40f" xml:lang="en-US">Preferred stock, shares outstanding (in shares)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnForeignCurrencyFairValueHedgeDerivatives" xlink:label="us-gaap_GainLossOnForeignCurrencyFairValueHedgeDerivatives" />
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    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnForeignCurrencyFairValueHedgeDerivatives_lbl_47f3d444023440d4bdc3e1cc1c0c5971" xml:lang="en-US">Change in fair value of preferred stock liabilities</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_LossDueToChangeInFairValueOfPreferredStock" xlink:label="ipix_LossDueToChangeInFairValueOfPreferredStock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_LossDueToChangeInFairValueOfPreferredStock" xlink:to="ipix_LossDueToChangeInFairValueOfPreferredStock_lbl_c62e1e9b036544b59f65c746238f910e" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_LossDueToChangeInFairValueOfPreferredStock_lbl_c62e1e9b036544b59f65c746238f910e" xml:lang="en-US">Loss due to change in fair value of preferred stock</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_WarrantsExercisedDescription" xlink:label="ipix_WarrantsExercisedDescription" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_WarrantsExercisedDescription" xlink:to="ipix_WarrantsExercisedDescription_lbl_c5fd03ffc9b14435946af93b1b98693f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_WarrantsExercisedDescription_lbl_c5fd03ffc9b14435946af93b1b98693f" xml:lang="en-US">Warrants exercised description</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_TermsOfAgreement" xlink:label="ipix_TermsOfAgreement" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_TermsOfAgreement" xlink:to="ipix_TermsOfAgreement_lbl_55f98cf19ece4583b8745e99f90f3641" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_TermsOfAgreement_lbl_55f98cf19ece4583b8745e99f90f3641" xml:lang="en-US">Terms of agreement</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightOutstanding" xlink:to="us-gaap_ClassOfWarrantOrRightOutstanding_lbl_2ab7f151aa984cb1b521b06b04e3f8bf" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl_2ab7f151aa984cb1b521b06b04e3f8bf" xml:lang="en-US">Purchase of warrants</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_FairValueMeasurementDetailsAbstract" xlink:label="ipix_FairValueMeasurementDetailsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_FairValueMeasurementDetailsAbstract" xlink:to="ipix_FairValueMeasurementDetailsAbstract_lbl_40afdcb8414d4a3db129d6b1c08ae071" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_FairValueMeasurementDetailsAbstract_lbl_40afdcb8414d4a3db129d6b1c08ae071" xml:lang="en-US">Fair Value Measurement (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConvertiblePreferredStock" xlink:to="ipix_ConvertiblePreferredStock_lbl_304115a166ba42d796163063023153d0" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="ipix_ConvertiblePreferredStock_lbl_304115a166ba42d796163063023153d0" xml:lang="en-US">Balance, beginning of year</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ConvertiblePreferredStock" xlink:label="ipix_ConvertiblePreferredStock" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConvertiblePreferredStock" xlink:to="ipix_ConvertiblePreferredStock_lbl_2" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ConvertiblePreferredStock_lbl_2" xml:lang="en-US">[Balance, beginning of year]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:to="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl_be93afef8e2e43908db956c5a814c42f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_lbl_be93afef8e2e43908db956c5a814c42f" xml:lang="en-US">Issuance of preferred stock at fair value</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_IssuanceOfPreferredStockByExerciseOfOneTwoSevenFiveWarrants" xlink:label="ipix_IssuanceOfPreferredStockByExerciseOfOneTwoSevenFiveWarrants" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_IssuanceOfPreferredStockByExerciseOfOneTwoSevenFiveWarrants" xlink:to="ipix_IssuanceOfPreferredStockByExerciseOfOneTwoSevenFiveWarrants_lbl_8c9006529bad4730939b2d289ed2f660" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_IssuanceOfPreferredStockByExerciseOfOneTwoSevenFiveWarrants_lbl_8c9006529bad4730939b2d289ed2f660" xml:lang="en-US">Issuance of preferred stock by exercise of 1,275 warrants</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConversionOfStockAmountConverted1" xlink:label="us-gaap_ConversionOfStockAmountConverted1" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConversionOfStockAmountConverted1" xlink:to="us-gaap_ConversionOfStockAmountConverted1_lbl_b2300c5c076f4505a149d0c90f9d3899" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConversionOfStockAmountConverted1_lbl_b2300c5c076f4505a149d0c90f9d3899" xml:lang="en-US">Conversion of preferred stock to common stock</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_ContingentConsideration" xlink:label="ipix_ContingentConsideration" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ContingentConsideration" xlink:to="ipix_ContingentConsideration_lbl_f4e2b4748d334a2d809827384f002c83" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_ContingentConsideration_lbl_f4e2b4748d334a2d809827384f002c83" xml:lang="en-US">Contingent consideration</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ChangeInFairValueOfPreferredStock" xlink:to="ipix_ChangeInFairValueOfPreferredStock_lbl_e8fd53755ae8482496aa8751dde1fd5f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="ipix_ChangeInFairValueOfPreferredStock_lbl_e8fd53755ae8482496aa8751dde1fd5f" xml:lang="en-US">Change in fair value of preferred stock due to modification of terms</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_IssuanceOfHunderedSharesValuedAtFiveThreeFivePointOneTwoPerShareSeriesBPreferredStockPerMayTwoZeroOneNineModification" xlink:label="ipix_IssuanceOfHunderedSharesValuedAtFiveThreeFivePointOneTwoPerShareSeriesBPreferredStockPerMayTwoZeroOneNineModification" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_IssuanceOfHunderedSharesValuedAtFiveThreeFivePointOneTwoPerShareSeriesBPreferredStockPerMayTwoZeroOneNineModification" xlink:to="ipix_IssuanceOfHunderedSharesValuedAtFiveThreeFivePointOneTwoPerShareSeriesBPreferredStockPerMayTwoZeroOneNineModification_lbl_ee1261ff20ce4b028a8a490a74b69f36" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_IssuanceOfHunderedSharesValuedAtFiveThreeFivePointOneTwoPerShareSeriesBPreferredStockPerMayTwoZeroOneNineModification_lbl_ee1261ff20ce4b028a8a490a74b69f36" xml:lang="en-US">Issuance of 100 shares valued at $535.12 per share Series B Preferred Stock per May 2019 Modification</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPreferredStock" xlink:to="us-gaap_DividendsPreferredStock_lbl_1ff3438984584fa8a4b45e74180f7036" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DividendsPreferredStock_lbl_1ff3438984584fa8a4b45e74180f7036" xml:lang="en-US">5% accrued dividend (1)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_ConvertiblePreferredStock" xlink:to="ipix_ConvertiblePreferredStock_lbl_990270a5249844ab8c52f0597ddd5285" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="ipix_ConvertiblePreferredStock_lbl_990270a5249844ab8c52f0597ddd5285" xml:lang="en-US">Balance, end of year</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_FairValueMeasurementDetailsNarrativeAbstract" xlink:label="ipix_FairValueMeasurementDetailsNarrativeAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_FairValueMeasurementDetailsNarrativeAbstract" xlink:to="ipix_FairValueMeasurementDetailsNarrativeAbstract_lbl_561fdc8af70549839f287c784f736fb2" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_FairValueMeasurementDetailsNarrativeAbstract_lbl_561fdc8af70549839f287c784f736fb2" xml:lang="en-US">Fair Value Measurement (Details Narrative)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpense_lbl_77b06cc939b14f3d9deb069a21575a30" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestExpense_lbl_77b06cc939b14f3d9deb069a21575a30" xml:lang="en-US">Dividends recorded as interest expense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPreferredStockStock" xlink:to="us-gaap_DividendsPreferredStockStock_lbl_eabb13658bf9411085f6471c02752e3f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DividendsPreferredStockStock_lbl_eabb13658bf9411085f6471c02752e3f" xml:lang="en-US">Amount of series B preferred stock dividends paid</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_AccruedDividend" xlink:to="ipix_AccruedDividend_lbl_987d0ecaa3ba42c6b54e7cc8bd818a3f" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ipix_AccruedDividend_lbl_987d0ecaa3ba42c6b54e7cc8bd818a3f" xml:lang="en-US">5% accrued dividend</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_DisclosureIncomeTaxesDetailsAbstract" xlink:label="ipix_DisclosureIncomeTaxesDetailsAbstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_DisclosureIncomeTaxesDetailsAbstract" xlink:to="ipix_DisclosureIncomeTaxesDetailsAbstract_lbl_f65e7f247e894ddcbad998783f5bbef5" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_DisclosureIncomeTaxesDetailsAbstract_lbl_f65e7f247e894ddcbad998783f5bbef5" xml:lang="en-US">Income Taxes (Details)</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_lbl_05429b26c0144319990e5038e4366154" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_lbl_05429b26c0144319990e5038e4366154" xml:lang="en-US">Book income at federal statutory rate</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_lbl_0700c4d412e64c44af9a6934cd8daa59" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_lbl_0700c4d412e64c44af9a6934cd8daa59" xml:lang="en-US">State income tax, net of federal tax benefit</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance_lbl_a9b5175323a94789a6ab586a693ab469" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance_lbl_a9b5175323a94789a6ab586a693ab469" xml:lang="en-US">Change in valuation allowance</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_lbl_bd212aa4c0cd45739582ad4130b2202a" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_lbl_bd212aa4c0cd45739582ad4130b2202a" xml:lang="en-US">Research and development credit</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_EffectiveIncomeTaxRateReconciliationPermanentDifference" xlink:label="ipix_EffectiveIncomeTaxRateReconciliationPermanentDifference" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_EffectiveIncomeTaxRateReconciliationPermanentDifference" xlink:to="ipix_EffectiveIncomeTaxRateReconciliationPermanentDifference_lbl_4cbb0db977c940bc939337296f1a9e3d" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ipix_EffectiveIncomeTaxRateReconciliationPermanentDifference_lbl_4cbb0db977c940bc939337296f1a9e3d" xml:lang="en-US">Permanent difference</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_lbl_afa500e8624644b59397d5b50fd36aa1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_lbl_afa500e8624644b59397d5b50fd36aa1" xml:lang="en-US">Change in Federal Statutory Rate</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_lbl_febaebb4166447f2960891e601f417c1" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_lbl_febaebb4166447f2960891e601f417c1" xml:lang="en-US">Others - net</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent_lbl_8a532f18f67c4d658eaafcef29041eee" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent_lbl_8a532f18f67c4d658eaafcef29041eee" xml:lang="en-US">Total</link:label>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent_lbl_9" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent_lbl_9" xml:lang="en-US">[Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent]</link:label>
    <link:loc xlink:type="locator" xlink:href="ipix-20190630.xsd#ipix_IncomeTaxesDetails1Abstract" xlink:label="ipix_IncomeTaxesDetails1Abstract" />
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ipix_IncomeTaxesDetails1Abstract" xlink:to="ipix_IncomeTaxesDetails1Abstract_lbl_afaa0cb3da9b4f649f9c7f11789be345" xlink:type="arc" />
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