Does Iron Bisglycinate interact with Vitamin C?

Written to our editorial standards · reviewed against published research· Updated 2 Jun 2026
Take together· strong evidence

Vitamin C dramatically boosts iron absorption.

Vitamin C reduces dietary iron to its more soluble ferrous form and shields it from inhibitors like tannins and phytates, which can lift uptake of non-heme iron several-fold. The benefit is greatest for plant and supplemental iron, exactly the iron most people struggle to absorb.

What to do

Take them together: pair your iron with roughly 200 mg of vitamin C or a vitamin-C-rich food such as citrus, peppers, or strawberries. There is no need for a separate megadose; a modest amount alongside the iron does the job.

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Iron Bisglycinate
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Vitamin C
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Common questions

Can I take Iron Bisglycinate and Vitamin C together?
Take together. Take them together: pair your iron with roughly 200 mg of vitamin C or a vitamin-C-rich food such as citrus, peppers, or strawberries. There is no need for a separate megadose; a modest amount alongside the iron does the job.
Why do Iron Bisglycinate and Vitamin C interact?
Vitamin C reduces dietary iron to its more soluble ferrous form and shields it from inhibitors like tannins and phytates, which can lift uptake of non-heme iron several-fold. The benefit is greatest for plant and supplemental iron, exactly the iron most people struggle to absorb.

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Educational use only, not medical advice. Interaction risk depends on dose, your health, and any medications. Always consult a qualified clinician, especially if you take prescription drugs or are pregnant or nursing.