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There are two primary forms of iron supplements available:
- Ferrous iron: More commonly prescribed and includes ferrous sulfate, ferrous gluconate, and ferrous fumarate. Research shows these are generally better absorbed.
- Ferric iron: Less well absorbed but may cause fewer digestive side effects.
Ferrous sulfate is typically the first-choice supplement, as it contains 20% elemental iron and shows superior absorption rates. The recommended dosage usually provides 50-100mg of elemental iron daily for iron deficiency treatment.
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Last Updated: October 13, 2025
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