Your blood volume increases 50% — iron demand doubles
Iron deficiency anemia is the most common nutritional deficiency in pregnancy, affecting up to 40% of pregnant women globally. During pregnancy, your blood volume increases by approximately 50%, and your baby draws iron from you for their own blood and iron stores. Iron is also critical for placental development and oxygen delivery to the fetus. Ferrous bisglycinate is the gentlest, best-absorbed form — much less constipating than ferrous sulfate.
All pregnant women. Iron needs increase dramatically in the second and third trimester. Your OB will monitor your levels with blood tests.
27mg elemental iron daily (the standard prenatal amount) for prevention. Higher therapeutic doses (60–120mg) if anemic — as prescribed by doctor. Take with vitamin C for best absorption.
Hemoglobin levels typically improve within 4–8 weeks of treatment doses.
Constipation (most common), dark stools (normal), nausea. Ferrous bisglycinate has significantly fewer side effects than ferrous sulfate. Take with food and plenty of water.
Do not take iron with calcium supplements, antacids, or tea/coffee — these all reduce absorption. Space at least 2 hours apart. Do not self-prescribe high-dose iron without blood test confirmation of deficiency.
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