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  <xs:element id="ixhl_SharesAbstract" abstract="true" name="SharesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ixhl_FractionalAdjustmentOfCommonStockShares" abstract="false" name="FractionalAdjustmentOfCommonStockShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ixhl_AdditionalPaidInCapitalRollForward" abstract="true" name="AdditionalPaidInCapitalRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ixhl_AdjustmentsToAdditionalPaidInCapitalShareRepurchase" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalShareRepurchase" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ixhl_AdditionalPaidInCapitalShareIssuanceCosts" abstract="false" name="AdditionalPaidInCapitalShareIssuanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ixhl_ComplianceLegalAndRegulatory" abstract="false" name="ComplianceLegalAndRegulatory" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ixhl_AdvertisingAndInvestorRelations" abstract="false" name="AdvertisingAndInvestorRelations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ixhl_StockBasedPaymentsScheduleofRestrictedStockActivityDetailsTable" abstract="true" name="StockBasedPaymentsScheduleofRestrictedStockActivityDetailsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ixhl_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumberOfSharesAbstract" abstract="true" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumberOfSharesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ixhl_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledOrForfeitedWeightedAverageRemainingContractualTerm" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledOrForfeitedWeightedAverageRemainingContractualTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ixhl_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedWeightedAverageRemainingContractualTerm" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedWeightedAverageRemainingContractualTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ixhl_AggregatedIntrinsicValueAbstract" abstract="true" name="AggregatedIntrinsicValueAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ixhl_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionCancelledOrForfeitedIntrinsicValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionCancelledOrForfeitedIntrinsicValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ixhl_FairValueofFinancialInstrumentsDetailsTable" abstract="true" name="FairValueofFinancialInstrumentsDetailsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ixhl_DebentureMember" abstract="true" name="DebentureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ixhl_FairValueOfFinancialInstrumentsDetailsLineItems" abstract="true" name="FairValueOfFinancialInstrumentsDetailsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ixhl_IncomeTaxReconciliationNonAssessableIncome" abstract="false" name="IncomeTaxReconciliationNonAssessableIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ixhl_UnRecognizedUnusedTaxlosses" abstract="false" name="UnRecognizedUnusedTaxlosses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ixhl_PsychedelicMedicineAndDrugTherapiesSegmentMember" abstract="true" name="PsychedelicMedicineAndDrugTherapiesSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ixhl_RelatedPartyTransactionsDetailsTable" abstract="true" name="RelatedPartyTransactionsDetailsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
</xs:schema>
