Stack analysis
Iron + vitamin C
Classic absorption pairing for oral iron supplementation.
Confidence
78/100
Registry ingredients
Structured entries from our supplement intelligence registry (not personalized recommendations).
- Iron (bisglycinate / sulfate / fumarate)mineral
Evidence tier: high·Typical label range: Elemental iron per label varies; therapy is diagnosis-driven - avoid blind megadosing.
- Vitamin C (ascorbic acid)vitamin
Evidence tier: high·Typical label range: RDA 75-90 mg/day; supplements commonly 500-1000 mg; megadoses exceed saturation.
What this stack claims
Improved non-heme iron absorption, faster repletion in iron deficiency when appropriately dosed.
Biological logic
Vitamin C reduces ferric iron and supports uptake in the intestinal lumen for many formulations - standard clinical nutrition teaching.
Evidence level
Registry tier for this stack: HIGH
Strong for the absorption mechanism; still requires diagnosis of iron deficiency and monitoring (ferritin, CBC). Not for indiscriminate use - iron overload harms.
Risks
Hemochromatosis; iron overload; GI side effects; interactions with levothyroxine, quinolones, tetracyclines - separation timing matters.
Final verdict
**Legit pairing when iron therapy is indicated** and monitored - **harmful** if taken blindly while iron is normal/high.
FAQ
- Coffee/tea interference?
- Polyphenols/tannins can reduce absorption - spacing iron away from coffee/tea is sensible.
- Bisglycinate vs sulfate?
- Tolerance and elemental iron content differ; elemental iron dose and tolerance drive outcomes.
- Can men take this stack casually?
- Men should not take iron without medical indication - overload risk.