Does Green Tea EGCG interact with Iron Bisglycinate?

Written to our editorial standards · reviewed against published research· Updated 2 Jun 2026
Space them apart· moderate evidence

Green tea tannins inhibit iron absorption.

The polyphenols (tannins) in green tea bind non-heme iron in the gut and form complexes you cannot absorb, which can noticeably cut how much iron you take up from a supplement or a plant-based meal eaten at the same time.

What to do

Keep green tea (and other tea or coffee) at least 1 to 2 hours away from iron. Take iron with vitamin C instead, which counteracts these inhibitors. If you drink a lot of tea and are prone to low iron, watch the timing closely.

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Green Tea EGCG
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Iron Bisglycinate
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Common questions

Can I take Green Tea EGCG and Iron Bisglycinate together?
Space them apart. Keep green tea (and other tea or coffee) at least 1 to 2 hours away from iron. Take iron with vitamin C instead, which counteracts these inhibitors. If you drink a lot of tea and are prone to low iron, watch the timing closely.
Why do Green Tea EGCG and Iron Bisglycinate interact?
The polyphenols (tannins) in green tea bind non-heme iron in the gut and form complexes you cannot absorb, which can noticeably cut how much iron you take up from a supplement or a plant-based meal eaten at the same time.

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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.