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  1. Home
  2. Ingredients
  3. Iron
  4. Iron oxide

Iron oxide

category Iron
hub Part of Iron mineral
Compare all forms arrow_forward
Oral Oral safety: moderate

Other forms of Iron

Compare absorption and active amounts with sibling forms:

Ferrous Bisglycinate (Iron Bisglycinate)

Highly bioavailable, gentle-on-the-stomach iron supplement.

Ferrous Fumarate

Iron supplement for anemia prevention and treatment

Ferrous Sulfate

Common iron supplement for anemia. May cause stomach upset; take with food if ne...

Heme Iron Polypeptide
Heme Iron Polypeptide (HIP)

Gentle, high-absorption iron with minimal GI upset. Often derived from porcine s...

Iron alpha-ketoglutarate
Iron Amino Acid Chelate

Highly bioavailable, gentle iron form.

Iron ascorbate
Iron Bile salt
Iron Bile salt (unspecified)
Iron Fructo-Oligosaccharides
Iron picolinate
Iron pyrite
Polysaccharide-Iron Complex

Iron supplement with improved gastrointestinal tolerance.

table_chart Compare all forms in the table

Quick info

Also known as
black iron oxide, dark brown iron oxide, fda/e172 black iron oxide, ferrous and ferric oxides, iron oxide, iron oxide brown, iron oxide red, iron oxide red and oxide brown, red iron oxide, synthetic iron oxides

All forms of Iron

Current form highlighted. Switch to compare.

  • Ferrous Bisglycinate (Iron Bisglycinate)
  • Ferrous Fumarate
  • Ferrous Sulfate
  • Heme Iron Polypeptide
  • Heme Iron Polypeptide (HIP)
  • Iron alpha-ketoglutarate
  • Iron Amino Acid Chelate
  • Iron ascorbate
  • Iron Bile salt
  • Iron Bile salt (unspecified)
  • Iron Fructo-Oligosaccharides
  • Iron oxide You are here
  • Iron picolinate
  • Iron pyrite
  • Polysaccharide-Iron Complex
Full comparison table
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Scientific Disclaimer: This platform provides curated supplement information for educational purposes only. Content is not intended as medical advice, diagnosis, or treatment. Always consult with a qualified healthcare professional before beginning any new supplement protocol.