Concentrations of elemental iron in typical iron tablets

Salt FormTypical DosePercent FeElemental Iron
Ferrous sulfate (desiccated)325 mg37%120 mg
Ferrous sulfate (hydrated)325 mg20%64 mg
Ferrous fumarate300 mg33%99 mg
Ferrous gluconate325 mg12%39 mg

From: Iron

Cover of LiverTox
LiverTox: Clinical and Research Information on Drug-Induced Liver Injury [Internet].

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