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Iron supplement
Iron formulation used to prevent or treat iron deficiency anemia / From Wikipedia, the free encyclopedia
Iron supplements, also known as iron salts and iron pills, are a number of iron formulations used to treat and prevent iron deficiency including iron deficiency anemia.[7][8] For prevention they are only recommended in those with poor absorption, heavy menstrual periods, pregnancy, hemodialysis, or a diet low in iron.[8][9] Prevention may also be used in low birth weight babies.[8] They are taken by mouth, injection into a vein, or injection into a muscle.[8] While benefits may be seen in days, up to two months may be required until iron levels return to normal.[10]
![]() Iron supplement from the late 19th and early 20th century | |
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Trade names | Feosol, Feostat, Feratab, others |
Other names | Iron pills, iron salts, ferrous salts, ferric salts |
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Routes of administration | By mouth, intravenous, intramuscular |
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Common side effects include constipation, abdominal pain, dark stools, and diarrhea.[10] Other side effects, which may occur with excessive use, include iron overload and iron toxicity.[7][9] Ferrous salts used as supplements by mouth include ferrous fumarate, ferrous gluconate, ferrous succinate, and ferrous sulfate.[9] Injectable forms include iron dextran and iron sucrose.[9] They work by providing the iron needed for making red blood cells.[10]
Iron pills have been used medically since at least 1681, with an easy-to-use formulation being created in 1832.[11] Ferrous salt is on the World Health Organization's List of Essential Medicines.[12] Ferrous salts are available as a generic medication and over the counter.[7] Slow release formulations, while available, are not recommended.[8] In 2021, ferrous sulfate was the 105th most commonly prescribed medication in the United States, with more than 6 million prescriptions.[13][14]