<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 5.7a -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: http://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
    <link:roleRef roleURI="http://drinkreeds.com/role/Cover" xlink:href="reed-20201231.xsd#Cover" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/BalanceSheets" xlink:href="reed-20201231.xsd#BalanceSheets" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/BalanceSheetsParenthetical" xlink:href="reed-20201231.xsd#BalanceSheetsParenthetical" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/StatementsOfOperations" xlink:href="reed-20201231.xsd#StatementsOfOperations" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/StatementsOfChangesInStockholdersEquityDeficit" xlink:href="reed-20201231.xsd#StatementsOfChangesInStockholdersEquityDeficit" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/StatementsOfCashFlows" xlink:href="reed-20201231.xsd#StatementsOfCashFlows" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/OperationsAndLiquidity" xlink:href="reed-20201231.xsd#OperationsAndLiquidity" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/SignificantAccountingPolicies" xlink:href="reed-20201231.xsd#SignificantAccountingPolicies" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/Inventory" xlink:href="reed-20201231.xsd#Inventory" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/PropertyAndEquipment" xlink:href="reed-20201231.xsd#PropertyAndEquipment" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/IntangibleAssets" xlink:href="reed-20201231.xsd#IntangibleAssets" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/LineOfCredit" xlink:href="reed-20201231.xsd#LineOfCredit" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ConvertibleNoteToRelatedParty" xlink:href="reed-20201231.xsd#ConvertibleNoteToRelatedParty" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/NotePayable" xlink:href="reed-20201231.xsd#NotePayable" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/LeasesLiabilities" xlink:href="reed-20201231.xsd#LeasesLiabilities" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/WarrantLiability" xlink:href="reed-20201231.xsd#WarrantLiability" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/StockholdersEquity" xlink:href="reed-20201231.xsd#StockholdersEquity" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/Share-basedPayments" xlink:href="reed-20201231.xsd#Share-basedPayments" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/StockWarrants" xlink:href="reed-20201231.xsd#StockWarrants" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/IncomeTaxes" xlink:href="reed-20201231.xsd#IncomeTaxes" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/RelatedPartyTransactions" xlink:href="reed-20201231.xsd#RelatedPartyTransactions" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/CommitmentsAndContingencies" xlink:href="reed-20201231.xsd#CommitmentsAndContingencies" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/SubsequentEvents" xlink:href="reed-20201231.xsd#SubsequentEvents" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/SignificantAccountingPoliciesPolicies" xlink:href="reed-20201231.xsd#SignificantAccountingPoliciesPolicies" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/SignificantAccountingPoliciesTables" xlink:href="reed-20201231.xsd#SignificantAccountingPoliciesTables" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/InventoryTables" xlink:href="reed-20201231.xsd#InventoryTables" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/PropertyAndEquipmentTables" xlink:href="reed-20201231.xsd#PropertyAndEquipmentTables" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/IntangibleAssetsTables" xlink:href="reed-20201231.xsd#IntangibleAssetsTables" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/LineOfCreditTables" xlink:href="reed-20201231.xsd#LineOfCreditTables" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ConvertibleNoteToRelatedPartyTables" xlink:href="reed-20201231.xsd#ConvertibleNoteToRelatedPartyTables" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/LeasesLiabilitiesTables" xlink:href="reed-20201231.xsd#LeasesLiabilitiesTables" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/WarrantLiabilityTables" xlink:href="reed-20201231.xsd#WarrantLiabilityTables" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/Share-basedPaymentsTables" xlink:href="reed-20201231.xsd#Share-basedPaymentsTables" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/StockWarrantsTables" xlink:href="reed-20201231.xsd#StockWarrantsTables" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/IncomeTaxesTables" xlink:href="reed-20201231.xsd#IncomeTaxesTables" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/OperationsAndLiquidityDetailsNarrative" xlink:href="reed-20201231.xsd#OperationsAndLiquidityDetailsNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfEstimatedUsefulLivesOfPropertyAndEquipmentAndRelatedDepreciationDetails" xlink:href="reed-20201231.xsd#ScheduleOfEstimatedUsefulLivesOfPropertyAndEquipmentAndRelatedDepreciationDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfPotentiallyDilutiveSecuritiesDetails" xlink:href="reed-20201231.xsd#ScheduleOfPotentiallyDilutiveSecuritiesDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/SignificantAccountingPoliciesDetailsNarrative" xlink:href="reed-20201231.xsd#SignificantAccountingPoliciesDetailsNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfInventoryDetails" xlink:href="reed-20201231.xsd#ScheduleOfInventoryDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/InventoryDetailsNarrative" xlink:href="reed-20201231.xsd#InventoryDetailsNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfPropertyAndEquipmentDetails" xlink:href="reed-20201231.xsd#ScheduleOfPropertyAndEquipmentDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfEquipmentHeldForSaleDetails" xlink:href="reed-20201231.xsd#ScheduleOfEquipmentHeldForSaleDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/PropertyAndEquipmentDetailsNarrative" xlink:href="reed-20201231.xsd#PropertyAndEquipmentDetailsNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/SummaryOfIntangibleAssetsDetails" xlink:href="reed-20201231.xsd#SummaryOfIntangibleAssetsDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/IntangibleAssetsDetailsNarrative" xlink:href="reed-20201231.xsd#IntangibleAssetsDetailsNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfAmountOutstandingUnderCreditFacilitiesDetails" xlink:href="reed-20201231.xsd#ScheduleOfAmountOutstandingUnderCreditFacilitiesDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/LineOfCreditDetailsNarrative" xlink:href="reed-20201231.xsd#LineOfCreditDetailsNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfConvertibleNotesDetails" xlink:href="reed-20201231.xsd#ScheduleOfConvertibleNotesDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ConvertibleNoteToRelatedPartyDetailsNarrative" xlink:href="reed-20201231.xsd#ConvertibleNoteToRelatedPartyDetailsNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/NotePayableDetailsNarrative" xlink:href="reed-20201231.xsd#NotePayableDetailsNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfFutureMinimumLeasePaymentsUnderLeasesDetails" xlink:href="reed-20201231.xsd#ScheduleOfFutureMinimumLeasePaymentsUnderLeasesDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/LeasesLiabilitiesDetailsNarrative" xlink:href="reed-20201231.xsd#LeasesLiabilitiesDetailsNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfWarrantLiabilityUsingAssumptionsDetails" xlink:href="reed-20201231.xsd#ScheduleOfWarrantLiabilityUsingAssumptionsDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfWarrantLiabilityDetails" xlink:href="reed-20201231.xsd#ScheduleOfWarrantLiabilityDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/StockholdersEquityDetailsNarrative" xlink:href="reed-20201231.xsd#StockholdersEquityDetailsNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/SummaryOfNon-vestedRestrictedStockActivityDetails" xlink:href="reed-20201231.xsd#SummaryOfNon-vestedRestrictedStockActivityDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfStockOptionActivityDetails" xlink:href="reed-20201231.xsd#ScheduleOfStockOptionActivityDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfInformationRegardingStockOptionsDetails" xlink:href="reed-20201231.xsd#ScheduleOfInformationRegardingStockOptionsDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/Share-basedPaymentsDetailsNarrative" xlink:href="reed-20201231.xsd#Share-basedPaymentsDetailsNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfWarrantActivityDetails" xlink:href="reed-20201231.xsd#ScheduleOfWarrantActivityDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfWarrantsOutstandingAndExercisableDetails" xlink:href="reed-20201231.xsd#ScheduleOfWarrantsOutstandingAndExercisableDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/StockWarrantsDetailsNarrative" xlink:href="reed-20201231.xsd#StockWarrantsDetailsNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfDeferredIncomeTaxAssetsDetails" xlink:href="reed-20201231.xsd#ScheduleOfDeferredIncomeTaxAssetsDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/ScheduleOfReconciliationOfEffectiveIncomeTaxRateToU.s.StatutoryRateDetails" xlink:href="reed-20201231.xsd#ScheduleOfReconciliationOfEffectiveIncomeTaxRateToU.s.StatutoryRateDetails" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/IncomeTaxesDetailsNarrative" xlink:href="reed-20201231.xsd#IncomeTaxesDetailsNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/RelatedPartyTransactionsDetailsNarrative" xlink:href="reed-20201231.xsd#RelatedPartyTransactionsDetailsNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://drinkreeds.com/role/SubsequentEventsDetailsNarrative" xlink:href="reed-20201231.xsd#SubsequentEventsDetailsNarrative" xlink:type="simple" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/Cover" xlink:title="00000001 - Document - Cover" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/BalanceSheets" xlink:title="00000002 - Statement - Balance Sheets">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaapAssetsCurrent" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Cash" xlink:label="loc_us-gaapCash" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapCash" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaapAccountsReceivableNetCurrent" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapAccountsReceivableNetCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DueFromRelatedPartiesCurrent" xlink:label="loc_us-gaapDueFromRelatedPartiesCurrent" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapDueFromRelatedPartiesCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaapInventoryNet" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapInventoryNet" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="loc_us-gaapPrepaidExpenseAndOtherAssetsCurrent" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapPrepaidExpenseAndOtherAssetsCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaapAssets" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapAssetsCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaapPropertyPlantAndEquipmentNet" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapPropertyPlantAndEquipmentNet" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup" xlink:label="loc_us-gaapAssetsHeldForSaleNotPartOfDisposalGroup" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapAssetsHeldForSaleNotPartOfDisposalGroup" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaapIntangibleAssetsNetExcludingGoodwill" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapIntangibleAssetsNetExcludingGoodwill" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaapLiabilitiesCurrent" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaapAccountsPayableCurrent" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapAccountsPayableCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DueToRelatedPartiesCurrent" xlink:label="loc_us-gaapDueToRelatedPartiesCurrent" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapDueToRelatedPartiesCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaapAccruedLiabilitiesCurrent" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapAccruedLiabilitiesCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LinesOfCreditCurrent" xlink:label="loc_us-gaapLinesOfCreditCurrent" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapLinesOfCreditCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesPayableCurrent" xlink:label="loc_us-gaapNotesPayableCurrent" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapNotesPayableCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrent" xlink:label="loc_us-gaapFinanceLeaseLiabilityCurrent" />
      <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapFinanceLeaseLiabilityCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaapLiabilities" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilities" xlink:to="loc_us-gaapLiabilitiesCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:label="loc_us-gaapFinanceLeaseLiabilityNoncurrent" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilities" xlink:to="loc_us-gaapFinanceLeaseLiabilityNoncurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermNotesPayable" xlink:label="loc_us-gaapLongTermNotesPayable" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilities" xlink:to="loc_us-gaapLongTermNotesPayable" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConvertibleDebtNoncurrent" xlink:label="loc_us-gaapConvertibleDebtNoncurrent" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilities" xlink:to="loc_us-gaapConvertibleDebtNoncurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_WarrantLiabilityNoncurrent" xlink:label="loc_REEDWarrantLiabilityNoncurrent" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilities" xlink:to="loc_REEDWarrantLiabilityNoncurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaapStockholdersEquity" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaapPreferredStockValue" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapPreferredStockValue" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaapCommonStockValue" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapCommonStockValue" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="loc_us-gaapAdditionalPaidInCapital" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapAdditionalPaidInCapital" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaapRetainedEarningsAccumulatedDeficit" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapRetainedEarningsAccumulatedDeficit" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaapLiabilitiesAndStockholdersEquity" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapLiabilities" xlink:type="arc" weight="1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapStockholdersEquity" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/BalanceSheetsParenthetical" xlink:title="00000003 - Statement - Balance Sheets (Parenthetical)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/StatementsOfOperations" xlink:title="00000004 - Statement - Statements of Operations">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaapGrossProfit" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaapRevenueFromContractWithCustomerExcludingAssessedTax" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapGrossProfit" xlink:to="loc_us-gaapRevenueFromContractWithCustomerExcludingAssessedTax" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaapCostOfGoodsAndServicesSold" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapGrossProfit" xlink:to="loc_us-gaapCostOfGoodsAndServicesSold" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaapOperatingExpenses" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_DeliveryAndHandlingExpense" xlink:label="loc_REEDDeliveryAndHandlingExpense" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingExpenses" xlink:to="loc_REEDDeliveryAndHandlingExpense" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SellingAndMarketingExpense" xlink:label="loc_us-gaapSellingAndMarketingExpense" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingExpenses" xlink:to="loc_us-gaapSellingAndMarketingExpense" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaapGeneralAndAdministrativeExpense" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingExpenses" xlink:to="loc_us-gaapGeneralAndAdministrativeExpense" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaapOperatingIncomeLoss" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_us-gaapGrossProfit" xlink:type="arc" weight="1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_us-gaapOperatingExpenses" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaapNetIncomeLoss" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapOperatingIncomeLoss" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="loc_us-gaapGainsLossesOnExtinguishmentOfDebt" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapGainsLossesOnExtinguishmentOfDebt" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaapInterestExpense" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapInterestExpense" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAdjustmentOfWarrants" xlink:label="loc_us-gaapFairValueAdjustmentOfWarrants" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapFairValueAdjustmentOfWarrants" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_us-gaapNetIncomeLossAvailableToCommonStockholdersBasic" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLossAvailableToCommonStockholdersBasic" xlink:to="loc_us-gaapNetIncomeLoss" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockDividendsIncomeStatementImpact" xlink:label="loc_us-gaapPreferredStockDividendsIncomeStatementImpact" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLossAvailableToCommonStockholdersBasic" xlink:to="loc_us-gaapPreferredStockDividendsIncomeStatementImpact" xlink:type="arc" weight="-1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/StatementsOfChangesInStockholdersEquityDeficit" xlink:title="00000005 - Statement - Statements of Changes in Stockholders&apos; Equity (Deficit)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/StatementsOfCashFlows" xlink:title="00000006 - Statement - Statements of Cash Flows">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaapNetIncomeLoss" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapNetIncomeLoss" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaapDepreciationDepletionAndAmortization" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapDepreciationDepletionAndAmortization" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="loc_us-gaapGainLossOnSaleOfPropertyPlantEquipment" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapGainLossOnSaleOfPropertyPlantEquipment" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainLossOnTerminationOfLease" xlink:label="loc_us-gaapGainLossOnTerminationOfLease" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapGainLossOnTerminationOfLease" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="loc_us-gaapGainsLossesOnExtinguishmentOfDebt" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapGainsLossesOnExtinguishmentOfDebt" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AmortizationOfDebtDiscountPremium" xlink:label="loc_us-gaapAmortizationOfDebtDiscountPremium" />
      <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapAmortizationOfDebtDiscountPremium" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense" xlink:label="loc_us-gaapOperatingLeaseRightOfUseAssetAmortizationExpense" />
      <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapOperatingLeaseRightOfUseAssetAmortizationExpense" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_FairValueOfVestedOptions" xlink:label="loc_REEDFairValueOfVestedOptions" />
      <link:calculationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_REEDFairValueOfVestedOptions" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_FairValueOfVestedRestrictedSharesGrantedToDirectorsAndOfficersForServices" xlink:label="loc_REEDFairValueOfVestedRestrictedSharesGrantedToDirectorsAndOfficersForServices" />
      <link:calculationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_REEDFairValueOfVestedRestrictedSharesGrantedToDirectorsAndOfficersForServices" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_DecreaseInAllowanceForDoubtfulAccounts" xlink:label="loc_REEDDecreaseInAllowanceForDoubtfulAccounts" />
      <link:calculationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_REEDDecreaseInAllowanceForDoubtfulAccounts" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_IncreaseDecreaseInInventoryReserve" xlink:label="loc_REEDIncreaseDecreaseInInventoryReserve" />
      <link:calculationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_REEDIncreaseDecreaseInInventoryReserve" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAdjustmentOfWarrants" xlink:label="loc_us-gaapFairValueAdjustmentOfWarrants" />
      <link:calculationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapFairValueAdjustmentOfWarrants" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_AccrualOfInterestOnConvertibleNoteToRelatedParty" xlink:label="loc_REEDAccrualOfInterestOnConvertibleNoteToRelatedParty" />
      <link:calculationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_REEDAccrualOfInterestOnConvertibleNoteToRelatedParty" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasePayments" xlink:label="loc_us-gaapOperatingLeasePayments" />
      <link:calculationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapOperatingLeasePayments" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaapIncreaseDecreaseInAccountsReceivable" />
      <link:calculationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInAccountsReceivable" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaapIncreaseDecreaseInInventories" />
      <link:calculationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInInventories" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaapIncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" />
      <link:calculationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaapIncreaseDecreaseInAccountsPayable" />
      <link:calculationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInAccountsPayable" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="loc_us-gaapIncreaseDecreaseInAccruedLiabilities" />
      <link:calculationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInAccruedLiabilities" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_PaymentsForTrademarkCosts" xlink:label="loc_REEDPaymentsForTrademarkCosts" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_REEDPaymentsForTrademarkCosts" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="loc_us-gaapProceedsFromSaleOfPropertyPlantAndEquipment" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaapProceedsFromSaleOfPropertyPlantAndEquipment" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaapPaymentsToAcquirePropertyPlantAndEquipment" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaapPaymentsToAcquirePropertyPlantAndEquipment" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromLinesOfCredit" xlink:label="loc_us-gaapProceedsFromLinesOfCredit" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapProceedsFromLinesOfCredit" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfLinesOfCredit" xlink:label="loc_us-gaapRepaymentsOfLinesOfCredit" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapRepaymentsOfLinesOfCredit" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_PaymentsForCapitalizationOfFinancingCost" xlink:label="loc_REEDPaymentsForCapitalizationOfFinancingCost" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_REEDPaymentsForCapitalizationOfFinancingCost" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfDebt" xlink:label="loc_us-gaapProceedsFromIssuanceOfDebt" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapProceedsFromIssuanceOfDebt" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt" xlink:label="loc_us-gaapProceedsFromRepaymentsOfRelatedPartyDebt" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapProceedsFromRepaymentsOfRelatedPartyDebt" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfConvertibleDebt" xlink:label="loc_us-gaapRepaymentsOfConvertibleDebt" />
      <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapRepaymentsOfConvertibleDebt" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfLongTermCapitalLeaseObligations" xlink:label="loc_us-gaapRepaymentsOfLongTermCapitalLeaseObligations" />
      <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapRepaymentsOfLongTermCapitalLeaseObligations" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="loc_us-gaapProceedsFromStockOptionsExercised" />
      <link:calculationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapProceedsFromStockOptionsExercised" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromWarrantExercises" xlink:label="loc_us-gaapProceedsFromWarrantExercises" />
      <link:calculationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapProceedsFromWarrantExercises" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="loc_us-gaapProceedsFromIssuanceOfCommonStock" />
      <link:calculationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapProceedsFromIssuanceOfCommonStock" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:type="arc" weight="1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:type="arc" weight="1" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/OperationsAndLiquidity" xlink:title="00000007 - Disclosure - Operations and Liquidity" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/SignificantAccountingPolicies" xlink:title="00000008 - Disclosure - Significant Accounting Policies" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/Inventory" xlink:title="00000009 - Disclosure - Inventory" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/PropertyAndEquipment" xlink:title="00000010 - Disclosure - Property and Equipment" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/IntangibleAssets" xlink:title="00000011 - Disclosure - Intangible Assets" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/LineOfCredit" xlink:title="00000012 - Disclosure - Line of Credit" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ConvertibleNoteToRelatedParty" xlink:title="00000013 - Disclosure - Convertible Note to a Related Party" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/NotePayable" xlink:title="00000014 - Disclosure - Note Payable" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/LeasesLiabilities" xlink:title="00000015 - Disclosure - Leases Liabilities" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/WarrantLiability" xlink:title="00000016 - Disclosure - Warrant Liability" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/StockholdersEquity" xlink:title="00000017 - Disclosure - Stockholders&#8217; Equity" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/Share-basedPayments" xlink:title="00000018 - Disclosure - Share-Based Payments" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/StockWarrants" xlink:title="00000019 - Disclosure - Stock Warrants" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/IncomeTaxes" xlink:title="00000020 - Disclosure - Income Taxes" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/RelatedPartyTransactions" xlink:title="00000021 - Disclosure - Related Party Transactions" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/CommitmentsAndContingencies" xlink:title="00000022 - Disclosure - Commitments and Contingencies" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/SubsequentEvents" xlink:title="00000023 - Disclosure - Subsequent Events" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/SignificantAccountingPoliciesPolicies" xlink:title="00000024 - Disclosure - Significant Accounting Policies (Policies)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/SignificantAccountingPoliciesTables" xlink:title="00000025 - Disclosure - Significant Accounting Policies (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/InventoryTables" xlink:title="00000026 - Disclosure - Inventory (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/PropertyAndEquipmentTables" xlink:title="00000027 - Disclosure - Property and Equipment (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/IntangibleAssetsTables" xlink:title="00000028 - Disclosure - Intangible Assets (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/LineOfCreditTables" xlink:title="00000029 - Disclosure - Line of Credit (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ConvertibleNoteToRelatedPartyTables" xlink:title="00000030 - Disclosure - Convertible Note to a Related Party (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/LeasesLiabilitiesTables" xlink:title="00000031 - Disclosure - Leases Liabilities (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/WarrantLiabilityTables" xlink:title="00000032 - Disclosure - Warrant Liability (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/Share-basedPaymentsTables" xlink:title="00000033 - Disclosure - Share-Based Payments (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/StockWarrantsTables" xlink:title="00000034 - Disclosure - Stock Warrants (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/IncomeTaxesTables" xlink:title="00000035 - Disclosure - Income Taxes (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/OperationsAndLiquidityDetailsNarrative" xlink:title="00000036 - Disclosure - Operations and Liquidity (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfEstimatedUsefulLivesOfPropertyAndEquipmentAndRelatedDepreciationDetails" xlink:title="00000037 - Disclosure - Schedule of Estimated Useful Lives of Property and Equipment and Related Depreciation (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfPotentiallyDilutiveSecuritiesDetails" xlink:title="00000038 - Disclosure - Schedule of Potentially Dilutive Securities (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/SignificantAccountingPoliciesDetailsNarrative" xlink:title="00000039 - Disclosure - Significant Accounting Policies (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfInventoryDetails" xlink:title="00000040 - Disclosure - Schedule of Inventory (Details)">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaapInventoryNet" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InventoryRawMaterials" xlink:label="loc_us-gaapInventoryRawMaterials" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapInventoryNet" xlink:to="loc_us-gaapInventoryRawMaterials" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InventoryFinishedGoods" xlink:label="loc_us-gaapInventoryFinishedGoods" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapInventoryNet" xlink:to="loc_us-gaapInventoryFinishedGoods" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/InventoryDetailsNarrative" xlink:title="00000041 - Disclosure - Inventory (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfPropertyAndEquipmentDetails" xlink:title="00000042 - Disclosure - Schedule of Property and Equipment (Details)">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaapPropertyPlantAndEquipmentNet" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaapPropertyPlantAndEquipmentGross" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapPropertyPlantAndEquipmentNet" xlink:to="loc_us-gaapPropertyPlantAndEquipmentGross" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaapAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapPropertyPlantAndEquipmentNet" xlink:to="loc_us-gaapAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:type="arc" weight="-1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfEquipmentHeldForSaleDetails" xlink:title="00000043 - Disclosure - Schedule of Equipment Held for Sale (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/PropertyAndEquipmentDetailsNarrative" xlink:title="00000044 - Disclosure - Property and Equipment (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/SummaryOfIntangibleAssetsDetails" xlink:title="00000045 - Disclosure - Summary of Intangible Assets (Details)">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:label="loc_us-gaapIndefiniteLivedIntangibleAssetsExcludingGoodwill" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IndefiniteLivedTradeNames" xlink:label="loc_us-gaapIndefiniteLivedTradeNames" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:to="loc_us-gaapIndefiniteLivedTradeNames" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IndefiniteLivedTrademarks" xlink:label="loc_us-gaapIndefiniteLivedTrademarks" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:to="loc_us-gaapIndefiniteLivedTrademarks" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/IntangibleAssetsDetailsNarrative" xlink:title="00000046 - Disclosure - Intangible Assets (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfAmountOutstandingUnderCreditFacilitiesDetails" xlink:title="00000047 - Disclosure - Schedule of Amount Outstanding Under Credit Facilities (Details)">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LinesOfCreditCurrent" xlink:label="loc_us-gaapLinesOfCreditCurrent" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_LineOfCreditIncludingCapitalizedFinanceCosts" xlink:label="loc_REEDLineOfCreditIncludingCapitalizedFinanceCosts" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLinesOfCreditCurrent" xlink:to="loc_REEDLineOfCreditIncludingCapitalizedFinanceCosts" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_CapitalizedFinanceCosts" xlink:label="loc_REEDCapitalizedFinanceCosts" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLinesOfCreditCurrent" xlink:to="loc_REEDCapitalizedFinanceCosts" xlink:type="arc" weight="-1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/LineOfCreditDetailsNarrative" xlink:title="00000048 - Disclosure - Line of Credit (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfConvertibleNotesDetails" xlink:title="00000049 - Disclosure - Schedule of Convertible Notes (Details)">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConvertibleDebt" xlink:label="loc_us-gaapConvertibleDebt" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConvertibleNotesPayableCurrent" xlink:label="loc_us-gaapConvertibleNotesPayableCurrent" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapConvertibleDebt" xlink:to="loc_us-gaapConvertibleNotesPayableCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:label="loc_us-gaapInterestPayableCurrent" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapConvertibleDebt" xlink:to="loc_us-gaapInterestPayableCurrent" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ConvertibleNoteToRelatedPartyDetailsNarrative" xlink:title="00000050 - Disclosure - Convertible Note to a Related Party (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/NotePayableDetailsNarrative" xlink:title="00000051 - Disclosure - Note Payable (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfFutureMinimumLeasePaymentsUnderLeasesDetails" xlink:title="00000052 - Disclosure - Schedule of Future Minimum Lease Payments Under Leases (Details)">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaapFinanceLeaseLiabilityPaymentsDue" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="loc_us-gaapFinanceLeaseLiabilityPaymentsDueNextTwelveMonths" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapFinanceLeaseLiabilityPaymentsDue" xlink:to="loc_us-gaapFinanceLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaapFinanceLeaseLiabilityPaymentsDueYearTwo" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapFinanceLeaseLiabilityPaymentsDue" xlink:to="loc_us-gaapFinanceLeaseLiabilityPaymentsDueYearTwo" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" xlink:label="loc_us-gaapFinanceLeaseLiabilityPaymentsDueYearThree" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapFinanceLeaseLiabilityPaymentsDue" xlink:to="loc_us-gaapFinanceLeaseLiabilityPaymentsDueYearThree" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" xlink:label="loc_us-gaapFinanceLeaseLiabilityPaymentsDueYearFour" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapFinanceLeaseLiabilityPaymentsDue" xlink:to="loc_us-gaapFinanceLeaseLiabilityPaymentsDueYearFour" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive" xlink:label="loc_us-gaapFinanceLeaseLiabilityPaymentsDueYearFive" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapFinanceLeaseLiabilityPaymentsDue" xlink:to="loc_us-gaapFinanceLeaseLiabilityPaymentsDueYearFive" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/LeasesLiabilitiesDetailsNarrative" xlink:title="00000053 - Disclosure - Leases Liabilities (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfWarrantLiabilityUsingAssumptionsDetails" xlink:title="00000054 - Disclosure - Schedule of Warrant Liability Using Assumptions (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfWarrantLiabilityDetails" xlink:title="00000055 - Disclosure - Schedule of Warrant Liability (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/StockholdersEquityDetailsNarrative" xlink:title="00000056 - Disclosure - Stockholders&#8217; Equity (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/SummaryOfNon-vestedRestrictedStockActivityDetails" xlink:title="00000057 - Disclosure - Summary of Non-vested Restricted Stock Activity (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfStockOptionActivityDetails" xlink:title="00000058 - Disclosure - Schedule of Stock Option Activity (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfInformationRegardingStockOptionsDetails" xlink:title="00000059 - Disclosure - Schedule of Information Regarding Stock Options (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/Share-basedPaymentsDetailsNarrative" xlink:title="00000060 - Disclosure - Share-Based Payments (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfWarrantActivityDetails" xlink:title="00000061 - Disclosure - Schedule of Warrant Activity (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfWarrantsOutstandingAndExercisableDetails" xlink:title="00000062 - Disclosure - Schedule of Warrants Outstanding and Exercisable (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/StockWarrantsDetailsNarrative" xlink:title="00000063 - Disclosure - Stock Warrants (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfDeferredIncomeTaxAssetsDetails" xlink:title="00000064 - Disclosure - Schedule of Deferred Income Tax Assets (Details)">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsGross" xlink:label="loc_us-gaapDeferredTaxAssetsGross" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:label="loc_us-gaapDeferredTaxAssetsOperatingLossCarryforwards" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapDeferredTaxAssetsGross" xlink:to="loc_us-gaapDeferredTaxAssetsOperatingLossCarryforwards" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsCapitalLossCarryforwards" xlink:label="loc_us-gaapDeferredTaxAssetsCapitalLossCarryforwards" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapDeferredTaxAssetsGross" xlink:to="loc_us-gaapDeferredTaxAssetsCapitalLossCarryforwards" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" xlink:label="loc_us-gaapDeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapDeferredTaxAssetsGross" xlink:to="loc_us-gaapDeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts" xlink:label="loc_us-gaapDeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapDeferredTaxAssetsGross" xlink:to="loc_us-gaapDeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsInventory" xlink:label="loc_us-gaapDeferredTaxAssetsInventory" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapDeferredTaxAssetsGross" xlink:to="loc_us-gaapDeferredTaxAssetsInventory" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_DeferredTaxAssetOperatingLeaseLiability" xlink:label="loc_REEDDeferredTaxAssetOperatingLeaseLiability" />
      <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapDeferredTaxAssetsGross" xlink:to="loc_REEDDeferredTaxAssetOperatingLeaseLiability" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_DeferredTaxAssetReserveForAssetImpairment" xlink:label="loc_REEDDeferredTaxAssetReserveForAssetImpairment" />
      <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapDeferredTaxAssetsGross" xlink:to="loc_REEDDeferredTaxAssetReserveForAssetImpairment" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsNet" xlink:label="loc_us-gaapDeferredTaxAssetsNet" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapDeferredTaxAssetsNet" xlink:to="loc_us-gaapDeferredTaxAssetsGross" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="loc_us-gaapDeferredTaxAssetsValuationAllowance" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapDeferredTaxAssetsNet" xlink:to="loc_us-gaapDeferredTaxAssetsValuationAllowance" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilities" xlink:label="loc_us-gaapDeferredIncomeTaxLiabilities" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_DeferredTaxAssetOperatingLeaseRightofuseAsset" xlink:label="loc_REEDDeferredTaxAssetOperatingLeaseRightofuseAsset" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapDeferredIncomeTaxLiabilities" xlink:to="loc_REEDDeferredTaxAssetOperatingLeaseRightofuseAsset" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="reed-20201231.xsd#REED_DeferredTaxAssetsTaxDeferredFinanceCosts" xlink:label="loc_REEDDeferredTaxAssetsTaxDeferredFinanceCosts" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapDeferredIncomeTaxLiabilities" xlink:to="loc_REEDDeferredTaxAssetsTaxDeferredFinanceCosts" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:label="loc_us-gaapDeferredTaxAssetsLiabilitiesNet" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapDeferredTaxAssetsLiabilitiesNet" xlink:to="loc_us-gaapDeferredTaxAssetsNet" xlink:type="arc" weight="1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapDeferredTaxAssetsLiabilitiesNet" xlink:to="loc_us-gaapDeferredIncomeTaxLiabilities" xlink:type="arc" weight="-1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/ScheduleOfReconciliationOfEffectiveIncomeTaxRateToU.s.StatutoryRateDetails" xlink:title="00000065 - Disclosure - Schedule of Reconciliation of Effective Income Tax Rate to U.S. Statutory Rate (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/IncomeTaxesDetailsNarrative" xlink:title="00000066 - Disclosure - Income Taxes (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/RelatedPartyTransactionsDetailsNarrative" xlink:title="00000067 - Disclosure - Related Party Transactions (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://drinkreeds.com/role/SubsequentEventsDetailsNarrative" xlink:title="00000068 - Disclosure - Subsequent Events (Details Narrative)" />
</link:linkbase>
