All Ingredients948984815043
MineralsPregnancy Safe
Iron
Also known as: ferrous, ferric
Iron is essential for oxygen transport in blood (hemoglobin) and muscle (myoglobin). Iron deficiency is the most common nutritional deficiency worldwide. However, excess iron is toxic and supplementation should be based on documented need.
Key Benefits
- Prevents and treats iron-deficiency anemia
- Supports oxygen delivery to tissues
- Essential for energy production
- Supports immune function
- Critical during pregnancy
Recommended Dosage
General Use
8-18 mg daily (varies by sex and age)
Upper Limit
45 mg daily
Pregnancy
27 mg daily
Forms & Bioavailability
Best Forms
- ✓Iron bisglycinate (gentle, well-absorbed)
- ✓Ferrous sulfate (effective but more GI issues)
- ✓Heme iron (from animal sources)
Forms to Avoid
- ✗Ferric forms (less bioavailable)
- ✗High-dose tablets without medical supervision
Safety Notes
- Do NOT supplement unless deficiency is confirmed via blood test
- Excess iron causes oxidative damage and organ toxicity
- Men and postmenopausal women rarely need supplementation
- Causes constipation and nausea in many people
- Hereditary hemochromatosis makes iron supplementation dangerous
Drug Interactions
Consult your healthcare provider if you take any of the following:
Calcium (take separately)AntacidsTetracycline antibioticsZincCoffee and tea (reduce absorption)
Sources
- • WHO Guidelines on Iron Supplementation
- • NIH Office of Dietary Supplements
Top Iron Supplements
Thorne Iron 25mg
Thorne
capsule·25mg
USP Verified
Legion Athletics Iron 65mg
Legion Athletics
tablet·65mg
USP Verified
Proprietary BlendMega Dose Risk
Garden of Life Iron 18mg
Garden of Life
tablet·18mg
USP VerifiedUSDA OrganicNon-GMO Project Verified
Ancient Nutrition Iron 36mg
Ancient Nutrition
capsule·36mg
USP VerifiedNon-GMO Project Verified
BSN Iron 65mg
BSN
tablet·65mg
Non-GMO Project Verified
Not Third Party TestedMega Dose Risk
Athletic Greens Iron 36mg
Athletic Greens
liquid·36mg
Not Third Party Tested