Mineral / hematologic

Iron

Prepared by the ezGLP team. Sources last checked September 5, 2026.

Also known as Ferrous sulfate, Ferrous gluconate, Ferrous fumarate

Routes represented in the knowledgebase: Oral.

Educational overview

Confirm deficiency and formulation. Oral overdose can be fatal in children, while IV products carry hypersensitivity and hypotension risks.

Category: Mineral / hematologic
Routes represented: Oral
Storage context: Follow the product label; store in the original container away from excess heat and moisture.

Authoritative overview

Published literature

No validated PubMed or DOI link is currently curated for this entry.

Safety evidence

Common or reported: constipation, nausea, abdominal pain, vomiting, diarrhea.

Serious or important: intestinal injury, shock, organ failure, and death in overdose, especially in children.

Safety evidence source

Interaction evidence

These are general, pairwise evidence notes. Green identifies the potential-synergy category, while Lv3/Lv2/Lv1 communicates evidence strength; it does not guarantee benefit or cancel a safety warning.

With levothyroxine

Safety flag

Oral iron reduces levothyroxine absorption and can reduce treatment effectiveness.

Interaction evidence source

With zinc

Safety flag

Iron doses of 25 mg or more taken at the same time can reduce zinc absorption.

Interaction evidence source

With Ascorbic acid

Complementary evidenceLv3

Vitamin C can increase the absorption and bioavailability of nonheme iron.

Interaction evidence source

Summarised from published literature for reference only, with citations to the source. Evidence is graded as reported and is not a recommendation to combine, dose, or use any compound.

For personal tracking and education only. Not medical advice, diagnosis, or treatment, and not a medical device. Peptides may be prescription-only or unapproved where you live — consult a licensed healthcare professional.