Can you take Iron and Green Tea Extract together?
EGCG and tannins in green tea can cut non-heme iron absorption by 60–70%. One of the strongest supplement-supplement absorption conflicts.
Severity
Caution
Evidence
strong
Timing
Separate by 2+ hours.
How it works
EGCG chelates non-heme iron in the gut, forming insoluble complexes that pass through unabsorbed.
Studies consistently show 60–70% reduction in non-heme iron absorption from green tea. Heme iron from meat is less affected. The effect is dose-dependent and driven by the polyphenol content, not the caffeine.
What to do
Separate by at least two hours. Take iron on an empty stomach in the morning, green tea extract with a later meal.
Frequently asked
Should I separate Iron and Green Tea Extract?
Consider separating them. Separate by 2+ hours. Consult a healthcare professional for personalised advice.
Why do Iron and Green Tea Extract interact?
EGCG chelates non-heme iron in the gut, forming insoluble complexes that pass through unabsorbed.
How strong is the evidence for this interaction?
The evidence is strong, supported by multiple published studies and clinical data.
About these supplements
Other Iron interactions
Other Green Tea Extract interactions
Related reading
Check your full stack
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1 flagZinc and Iron compete for the same absorption pathway. Take at least 2 hours apart.
Supplements
This information is for educational purposes only. It is not medical advice and does not diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare professional.