Iron Bisglycinate (Gentle Iron)
Your body needs iron to build hemoglobin, and in pregnancy your hemoglobin volume goes up in a big way to keep oxygen flowing to the fetus and placenta. That demand is not optional, and it's not small. Bisglycinate is the chelated form, iron bound to two glycine molecules, and compared to ferrous sulfate at the same elemental dose, it tends to absorb better and treat your gut a lot more gently.
Evidence
Strong for the goal, moderate for this specific form, and that distinction matters. Correcting iron-deficiency anemia in pregnancy reliably raises maternal hemoglobin. That part is settled. Where bisglycinate specifically stands: head-to-head trials show it matches other iron salts on hemoglobin response, with fewer gastrointestinal complaints along the way. The tolerability edge is the well-proven part. A better clinical outcome than other iron forms is not.
Interactions
Iron reduces absorption of levothyroxine, tetracycline and fluoroquinolone antibiotics, and bisphosphonates (separate by 2-4 hours); calcium, antacids, coffee, and tea lower iron absorption, while vitamin C raises it. Coordinate timing with these.
Cautions
Confirm the need and dose with your OB or midwife and dose to labs, since unnecessary iron can cause constipation and, in iron-replete people, is not benign. Keep away from children, as accidental iron overdose is a leading pediatric poisoning. This is educational information for discussion with a clinician, not medical advice.
Food sources
Lean red meat, poultry, and fish (heme iron), plus lentils, beans, tofu, pumpkin seeds, and iron-fortified grains (non-heme), best paired with vitamin C.
