Nature of Iron
In nature, iron is usually found in its oxidized form, iron (III) oxide, which is insoluble. Ferrous iron is soluble and its toxicity varies, largely with the integrity of the gastrointestinal lining.
Iron supplements are typically used to treat anemia. Modalities include: diet, parasite control, vitamin A, riboflavin (B2), vitamin C (for absorption), folate, vitamin B12 and multivitamin-multimineral supplements, with or without iron; potentially avoiding the use of iron only supplements.
Read more about this topic: Iron Poisoning
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