Iron
Iron is essential for oxygen-carrying red blood cells. Needs vary widely and excess intake requires caution.
What it is
An essential mineral used in hemoglobin.
Role in the body
Involved in transporting oxygen.
Why people consider it
Considered by those prone to low iron; confirm need via testing.
Food sources
- Red meat
- Liver
- Clams
- Leafy greens
- Legumes
Typical labeled usage
Follow the labeled serving.
Recommended amount
Excess iron can be harmful — professional guidance is recommended.
Amounts are common educational ranges based on public reference values and product labels — not individual medical advice. If you have a condition, take medication, or are pregnant or breastfeeding, consult a physician or pharmacist.
When people take it
Vitamin C may aid absorption.
Evidence summary
Iron needs vary greatly between individuals
Established evidenceBoth deficiency and excess are undesirable; confirming need matters.
Who should exercise caution
Who should exercise caution
- Excess is harmful — confirm need with a physician
- Keep away from children
Potential medication interactions
- May affect absorption of some antibiotics and thyroid medication
Possible side effects
- Constipation
- Stomach upset
- Dark stools
Upper-limit guidance
An upper-limit guideline exists; check official references.
Products & brands
Related articles & packs
Monthly packs
References
- Dietary Reference Intakes for Japanese (2020) — Ministry of Health, Labour and Welfare (Japan)
- Dietary Supplement Fact Sheets — NIH Office of Dietary Supplements