ByDr. Brennan Commerford, D.C.·Last reviewed: July 2026
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Ferrous Sulfate: verification pending

We’re confirming the science for this compound before we publish a form ranking. Our team reviews every ranked page against peer-reviewed absorption data — this one is still under review, so we are not showing a score yet.

Check back soon. Rankings are reviewed by Dr. Brennan Commerford, D.C.

References

  1. A randomized trial (BESTIRON) reported that, in a study population of young children, ferrous sulfate produced a greater hemoglobin increase than iron polysaccharide complex. PubMed
  2. Human RCT in schoolchildren: ferrous sulfate produced lower serum ferritin at 6 months than iron bisglycinate chelate. PubMed
  3. A randomized human trial in pregnant women reported that bovine lactoferrin improved iron status comparably to ferrous sulfate, with fewer gastrointestinal side effects. PubMed
  4. Isotope study in preschool children: ferrous sulfate absorption (~7.9%) was greater than ferrous fumarate (~2.4%). PubMed

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.