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        <link:definition>152 - Disclosure - Property Plant and Equipment (Detail)</link:definition>
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        <link:usedOn>link:presentationLink</link:usedOn>
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        <link:definition>155 - Disclosure - Warrants and Warrant Derivative Liability - Additional Information (Detail)</link:definition>
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        <link:definition>156 - Disclosure - Warrants to Purchase Common Shares Outstanding (Detail)</link:definition>
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        <link:usedOn>link:presentationLink</link:usedOn>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureDebtAdditionalInformation" id="DisclosureDebtAdditionalInformation">
        <link:definition>157 - Disclosure - Debt - Additional Information (Detail)</link:definition>
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        <link:usedOn>link:presentationLink</link:usedOn>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureFutureMinimumLeasePayments" id="DisclosureFutureMinimumLeasePayments">
        <link:definition>158 - Disclosure - Future Minimum Lease Payments (Detail)</link:definition>
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        <link:usedOn>link:presentationLink</link:usedOn>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureCommitmentsAndContingenciesAdditionalInformation" id="DisclosureCommitmentsAndContingenciesAdditionalInformation">
        <link:definition>159 - Disclosure - Commitments and Contingencies - Additional Information (Detail)</link:definition>
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        <link:usedOn>link:presentationLink</link:usedOn>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureEquityAdditionalInformation" id="DisclosureEquityAdditionalInformation">
        <link:definition>160 - Disclosure - Equity - Additional Information (Detail)</link:definition>
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        <link:usedOn>link:presentationLink</link:usedOn>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureIncomeTaxesAdditionalInformation" id="DisclosureIncomeTaxesAdditionalInformation">
        <link:definition>161 - Disclosure - Income Taxes - Additional Information (Detail)</link:definition>
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        <link:usedOn>link:presentationLink</link:usedOn>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureReconciliationOfTotalAmountsOfUnrecognizedTaxBenefits" id="DisclosureReconciliationOfTotalAmountsOfUnrecognizedTaxBenefits">
        <link:definition>162 - Disclosure - Reconciliation of Total Amounts of Unrecognized Tax Benefits (Detail)</link:definition>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureJurisdictionsTheCompanyRemainsSubjectToTaxExaminations" id="DisclosureJurisdictionsTheCompanyRemainsSubjectToTaxExaminations">
        <link:definition>163 - Disclosure - Jurisdictions the Company Remains Subject to Tax Examinations (Detail)</link:definition>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureComponentsOfLossFromOperationsBeforeTaxes" id="DisclosureComponentsOfLossFromOperationsBeforeTaxes">
        <link:definition>164 - Disclosure - Components of Loss from Operations Before Taxes (Detail)</link:definition>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureBenefitExpenseFromIncomeTaxes" id="DisclosureBenefitExpenseFromIncomeTaxes">
        <link:definition>165 - Disclosure - Benefit Expense from Income Taxes (Detail)</link:definition>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureDifferenceBetweenBenefitExpenseFromIncomeTaxesAndAmountComputedByApplyingStatutoryIncomeTaxRateToIncomeBeforeTaxes" id="DisclosureDifferenceBetweenBenefitExpenseFromIncomeTaxesAndAmountComputedByApplyingStatutoryIncomeTaxRateToIncomeBeforeTaxes">
        <link:definition>166 - Disclosure - Difference between (Benefit) Expense from Income Taxes and Amount Computed by Applying Statutory Income Tax Rate to Income Before Taxes (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureIncomeTaxEffectOfEachTypeOfTemporaryDifferenceComprisingNetDeferredTaxAsset" id="DisclosureIncomeTaxEffectOfEachTypeOfTemporaryDifferenceComprisingNetDeferredTaxAsset">
        <link:definition>167 - Disclosure - Income Tax Effect of Each Type of Temporary Difference Comprising Net Deferred Tax Asset (Detail)</link:definition>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureStockIncentivePlansAndStockBasedCompensationAdditionalInformation" id="DisclosureStockIncentivePlansAndStockBasedCompensationAdditionalInformation">
        <link:definition>168 - Disclosure - Stock Incentive Plans and Stock Based Compensation - Additional Information (Detail)</link:definition>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureStockOptionActivity" id="DisclosureStockOptionActivity">
        <link:definition>169 - Disclosure - Stock Option Activity (Detail)</link:definition>
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        <link:usedOn>link:presentationLink</link:usedOn>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureAssumptionsUsedToEstimateFairValueOfShareBasedPaymentAwards" id="DisclosureAssumptionsUsedToEstimateFairValueOfShareBasedPaymentAwards">
        <link:definition>170 - Disclosure - Assumptions Used to Estimate Fair Value of Share-Based Payment Awards (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureRestrictedStockUnitActivity" id="DisclosureRestrictedStockUnitActivity">
        <link:definition>171 - Disclosure - Restricted Stock Unit Activity (Detail)</link:definition>
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        <link:usedOn>link:presentationLink</link:usedOn>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureStockBasedCompensationExpenseRelatedToOptionAwards" id="DisclosureStockBasedCompensationExpenseRelatedToOptionAwards">
        <link:definition>172 - Disclosure - Stock-Based Compensation Expense Related to Option Awards (Detail)</link:definition>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureDefinedContributionPlansAdditionalInformation" id="DisclosureDefinedContributionPlansAdditionalInformation">
        <link:definition>173 - Disclosure - Defined Contribution Plans - Additional Information (Detail)</link:definition>
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        <link:usedOn>link:presentationLink</link:usedOn>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureRelatedPartyTransactionAdditionalInformation" id="DisclosureRelatedPartyTransactionAdditionalInformation">
        <link:definition>174 - Disclosure - Related Party Transaction - Additional Information (Detail)</link:definition>
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        <link:usedOn>link:presentationLink</link:usedOn>
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      <link:roleType roleURI="http://www.amarincorp.com/taxonomy/role/DisclosureRestructuringAdditionalInformation" id="DisclosureRestructuringAdditionalInformation">
        <link:definition>175 - Disclosure - Restructuring - Additional Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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        <link:definition>176 - Disclosure - Restructuring Charges Included in Accrued Expenses in Accompanying Consolidated Balance Sheets (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>177 - Disclosure - Quarterly Summarized Financial Information (Detail)</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>178 - Disclosure - Subsequent Events - Additional Information (Detail)</link:definition>
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        <link:usedOn>link:presentationLink</link:usedOn>
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  <element name="DeferredStockUnitsDSUsMember" id="amrn_DeferredStockUnitsDSUsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DeferredTaxAssetsDepreciationAndAmortization" id="amrn_DeferredTaxAssetsDepreciationAndAmortization" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DeferredTaxLiabilitiesSubjectToExpiration" id="amrn_DeferredTaxLiabilitiesSubjectToExpiration" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DerivativeInstrumentMember" id="amrn_DerivativeInstrumentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DerivativeLiabilitiesTransferredToStockholdersEquity" id="amrn_DerivativeLiabilitiesTransferredToStockholdersEquity" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DevelopmentFeesCommitted" id="amrn_DevelopmentFeesCommitted" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DocumentAndEntityInformationAbstract" id="amrn_DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="DublinMember" id="amrn_DublinMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EarningsLossPerShareLineItems" id="amrn_EarningsLossPerShareLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EarningsLossPerShareTable" id="amrn_EarningsLossPerShareTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="EmployeeBenefitsMember" id="amrn_EmployeeBenefitsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="EsterNeurosciencesLtdMember" id="amrn_EsterNeurosciencesLtdMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ExcessFairValueOverPrincipalValue" id="amrn_ExcessFairValueOverPrincipalValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FairValueAndDerivativeInstrumentsTable" id="amrn_FairValueAndDerivativeInstrumentsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="FairValueAssumptionsComparableYieldToMaturity" id="amrn_FairValueAssumptionsComparableYieldToMaturity" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FairValueAssumptionsCouponRate" id="amrn_FairValueAssumptionsCouponRate" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FinanceMember" id="amrn_FinanceMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FirstIndicationForAmrOneZeroOneMember" id="amrn_FirstIndicationForAmrOneZeroOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FountainHealthcarePartnersFundOneLimitedPartnershipMember" id="amrn_FountainHealthcarePartnersFundOneLimitedPartnershipMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FurtherIndicationForAmrOneZeroOneMember" id="amrn_FurtherIndicationForAmrOneZeroOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="FutureMinimumGuaranteePayments" id="amrn_FutureMinimumGuaranteePayments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="GrotonMember" id="amrn_GrotonMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="Group1Member" id="amrn_Group1Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="Group2Member" id="amrn_Group2Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="Group3Member" id="amrn_Group3Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxesLineItems" id="amrn_IncomeTaxesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncomeTaxesTable" id="amrn_IncomeTaxesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="IncomeTaxReconciliationDerivativeLiabilities" id="amrn_IncomeTaxReconciliationDerivativeLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IncreaseDecreaseInLeaseRelatedLiabilities" id="amrn_IncreaseDecreaseInLeaseRelatedLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="InitialDerivativeFairValue" id="amrn_InitialDerivativeFairValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IntangibleAssetsDisclosureLineItems" id="amrn_IntangibleAssetsDisclosureLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="IntangibleAssetsDisclosureTable" id="amrn_IntangibleAssetsDisclosureTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="IrelandAndUnitedKingdomMember" id="amrn_IrelandAndUnitedKingdomMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="JanuaryTwoThousandAndElevenMember" id="amrn_JanuaryTwoThousandAndElevenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="JulyTwoThousandAndThirteenMember" id="amrn_JulyTwoThousandAndThirteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LargestCustomerMember" id="amrn_LargestCustomerMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LaxdaleLimitedMember" id="amrn_LaxdaleLimitedMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LeaseAgreementMonthlyPayment" id="amrn_LeaseAgreementMonthlyPayment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LeasesDisclosureLineItems" id="amrn_LeasesDisclosureLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LeasesDisclosureTable" id="amrn_LeasesDisclosureTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="LeaseTerm" id="amrn_LeaseTerm" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LiabilitiesForCommitmentsAxis" id="amrn_LiabilitiesForCommitmentsAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
  <element name="LiabilitiesForCommitmentsDomain" id="amrn_LiabilitiesForCommitmentsDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="LocationAxis" id="amrn_LocationAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
  <element name="LocationsDomain" id="amrn_LocationsDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="MaturityPeriodUsedToClassifyInvestments" id="amrn_MaturityPeriodUsedToClassifyInvestments" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NonCashMember" id="amrn_NonCashMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NonTradingActivityMember" id="amrn_NonTradingActivityMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfAgreements" id="amrn_NumberOfAgreements" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfLeasableSquareFeet" id="amrn_NumberOfLeasableSquareFeet" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OctoberTwentyZeroNinePrivatePlacementMember" id="amrn_OctoberTwentyZeroNinePrivatePlacementMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OptionsExercisablePeriod" id="amrn_OptionsExercisablePeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OptionsGrantedDuringPeriod" id="amrn_OptionsGrantedDuringPeriod" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OrbimedAdvisorsLimitedLiabilityCompanyMember" id="amrn_OrbimedAdvisorsLimitedLiabilityCompanyMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OrdinarySharesMember" id="amrn_OrdinarySharesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems" id="amrn_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable" id="amrn_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="OtherIncentiveProgramsMember" id="amrn_OtherIncentiveProgramsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PaymentsForSettlements" id="amrn_PaymentsForSettlements" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PeriodAxis" id="amrn_PeriodAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
  <element name="PeriodDomain" id="amrn_PeriodDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PeriodFiveMember" id="amrn_PeriodFiveMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PeriodFourMember" id="amrn_PeriodFourMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PeriodOneMember" id="amrn_PeriodOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PeriodSixMember" id="amrn_PeriodSixMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PeriodThreeMember" id="amrn_PeriodThreeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PeriodTwoMember" id="amrn_PeriodTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PotentialMarketingApprovalOneMember" id="amrn_PotentialMarketingApprovalOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PotentialMarketingApprovalTwoMember" id="amrn_PotentialMarketingApprovalTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PriorPeriodReclassificationAdjustmentsAxis" id="amrn_PriorPeriodReclassificationAdjustmentsAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
  <element name="PriorPeriodReclassificationAdjustmentsDomain" id="amrn_PriorPeriodReclassificationAdjustmentsDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProceedsFromStockOptionExerciseAndOther" id="amrn_ProceedsFromStockOptionExerciseAndOther" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProceedsFromStockOptionsExercisedGross" id="amrn_ProceedsFromStockOptionsExercisedGross" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProceedsFromWarrantExercisesGross" id="amrn_ProceedsFromWarrantExercisesGross" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProceedsMember" id="amrn_ProceedsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ProductSales" id="amrn_ProductSales" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="PropertyPlantAndEquipmentUsefulLifeTableTextBlock" id="amrn_PropertyPlantAndEquipmentUsefulLifeTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="QuarterlyFinancialInformationLineItems" id="amrn_QuarterlyFinancialInformationLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="QuarterlyFinancialInformationTable" id="amrn_QuarterlyFinancialInformationTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="RebatesChargebacksAndDiscountsMember" id="amrn_RebatesChargebacksAndDiscountsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RecentAccountingPronouncementsPolicyTextBlock" id="amrn_RecentAccountingPronouncementsPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReclassificationOfDerivativeLiabilitiesToAdditionalPaidInCapital" id="amrn_ReclassificationOfDerivativeLiabilitiesToAdditionalPaidInCapital" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReductionInGlobalWorkforcePercentage" id="amrn_ReductionInGlobalWorkforcePercentage" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReductionPercentageOfStaffPositions" id="amrn_ReductionPercentageOfStaffPositions" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RenewalOptionTermsMaximumAdditionalPeriodInYears" id="amrn_RenewalOptionTermsMaximumAdditionalPeriodInYears" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ReportedMember" id="amrn_ReportedMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RepublicOfIrelandUnitedKingdomAndIsraelMember" id="amrn_RepublicOfIrelandUnitedKingdomAndIsraelMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RestrictedStockAndRestrictedStockUnitsMember" id="amrn_RestrictedStockAndRestrictedStockUnitsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RevenuesLineItems" id="amrn_RevenuesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RevenuesTableTextBlock" id="amrn_RevenuesTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScenarioOneMember" id="amrn_ScenarioOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfCostOfRevenueTableTextBlock" id="amrn_ScheduleOfCostOfRevenueTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfFutureMinimumLeasePaymentsForCapitalLeaseAndOperatingLeaseTableTextBlock" id="amrn_ScheduleOfFutureMinimumLeasePaymentsForCapitalLeaseAndOperatingLeaseTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfIncomeTaxExpenseBenefitReconciliationTableTextBlock" id="amrn_ScheduleOfIncomeTaxExpenseBenefitReconciliationTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfRevenuesTable" id="amrn_ScheduleOfRevenuesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" id="amrn_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" id="amrn_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SignificantAccountingPoliciesLineItems" id="amrn_SignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SignificantAccountingPoliciesTable" id="amrn_SignificantAccountingPoliciesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="SignificantAssumptionsInMarketPriceOfStock" id="amrn_SignificantAssumptionsInMarketPriceOfStock" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SofinnovaVenturePartnersVIILimitedPartnershipMember" id="amrn_SofinnovaVenturePartnersVIILimitedPartnershipMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StatutoryTaxRate" id="amrn_StatutoryTaxRate" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockBasedCompensationExpenseMember" id="amrn_StockBasedCompensationExpenseMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockholdersEquityNoteLineItems" id="amrn_StockholdersEquityNoteLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockholdersEquityNoteTable" id="amrn_StockholdersEquityNoteTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="StockIncentivePlanTwentyElevenMember" id="amrn_StockIncentivePlanTwentyElevenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockIssuedDuringPeriodOfStockAndWarrantsForServicesOrClaims" id="amrn_StockIssuedDuringPeriodOfStockAndWarrantsForServicesOrClaims" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockIssuedDuringPeriodSharesOfStockAndWarrantsForServices" id="amrn_StockIssuedDuringPeriodSharesOfStockAndWarrantsForServices" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockIssuedDuringPeriodSharesStockWarrantsExercised" id="amrn_StockIssuedDuringPeriodSharesStockWarrantsExercised" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockIssuedDuringPeriodValueStockWarrantsExercised" id="amrn_StockIssuedDuringPeriodValueStockWarrantsExercised" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockOptionsAndRestrictedStockUnitsMember" id="amrn_StockOptionsAndRestrictedStockUnitsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockOptionsGrantedAfterJuneThirtyTwentyZeroNineMember" id="amrn_StockOptionsGrantedAfterJuneThirtyTwentyZeroNineMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="StockOptionsGrantedPriorToJuneThirtyTwentyZeroNineMember" id="amrn_StockOptionsGrantedPriorToJuneThirtyTwentyZeroNineMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SummaryOfValuationAllowancesTableTextBlock" id="amrn_SummaryOfValuationAllowancesTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SupplierDMember" id="amrn_SupplierDMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SupplierOneMember" id="amrn_SupplierOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SupplierThreeMember" id="amrn_SupplierThreeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SupplierTwoMember" id="amrn_SupplierTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxCreditCarryforwardExpirationYear" id="amrn_TaxCreditCarryforwardExpirationYear" type="xbrli:gYearItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxesbyNatureAxis" id="amrn_TaxesbyNatureAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
  <element name="TaxesbyNatureDomain" id="amrn_TaxesbyNatureDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TopThreeCustomerMember" id="amrn_TopThreeCustomerMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TotalInventoryNet" id="amrn_TotalInventoryNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TradingActivityMember" id="amrn_TradingActivityMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TypesOfTransactionsAxis" id="amrn_TypesOfTransactionsAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem"/>
  <element name="TypesOfTransactionsDomain" id="amrn_TypesOfTransactionsDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WarrantFourMember" id="amrn_WarrantFourMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WarrantOneMember" id="amrn_WarrantOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WarrantsIssuedOctoberTwentyZeroNineMember" id="amrn_WarrantsIssuedOctoberTwentyZeroNineMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WarrantThreeMember" id="amrn_WarrantThreeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WarrantTwoMember" id="amrn_WarrantTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageNumberBasicAndDilutedSharesOutstandingAbstract" id="amrn_WeightedAverageNumberBasicAndDilutedSharesOutstandingAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
</schema>
