Best Iron for Pregnancy
Top 4 products ranked
Last reviewed May 2026
Clinical dose: 15–45 mg
Why Iron for Pregnancy
Iron plays a important role in pregnancy. Essential for oxygen transport via hemoglobin and energy production in mitochondria. Iron bisglycinate (Ferrochel) offers 2–4x higher bioavailability than ferrous sulfate with significantly less GI distress—it's the preferred supplemental form.
What dose to look for
Clinical studies typically use 15–45 mg of iron. 15-25 mg for prevention/maintenance, 25-45 mg for deficiency treatment. RDA is 8 mg (men) / 18 mg (premenopausal women). Bisglycinate forms effective at lower doses due to 2-4× bioavailability. Products below this range may not deliver meaningful results.
What form to look for
Avoid ferrous sulfate — common gi side effects. Avoid ferrous fumarate — significant gi side effects. Avoid ferrous gluconate — low elemental iron (12%). Look for iron bisglycinate (ferrochel) for better absorption.
What the research says
Iron has strong clinical evidence for pregnancy benefits. Essential for oxygen transport via hemoglobin; bisglycinate form has 2-4x better absorption than ferrous sulfate Learn more
