Can You Take Catechin and Iron Together?

May affect absorption

The short answer

Catechin is a flavan-3-ol polyphenol that strongly chelates iron through its catechol (3',4'-dihydroxy) ring structure. Studies show catechins can reduce non-heme iron absorption by up to 75%.

How to arrange timing

Separate Catechin and iron supplements by at least 2 hours. Catechins are among the strongest polyphenolic iron chelators.

Reference

Reference noted for this combination: Hurrell RF, et al. Inhibition of non-haem iron absorption in man by polyphenolic-containing beverages. Br J Nutr. 1999;81(4):289-295.

Important context

Whether supplements suit you together also depends on dose, product formulation, health conditions, and medication use. Ask a doctor or pharmacist first if you take medication, are pregnant or breastfeeding, or have a chronic condition.