Can You Take Gallic Acid and Iron Together?

May affect absorption

The short answer

Gallic Acid is a trihydroxybenzoic acid that is one of the most potent polyphenolic iron chelators. Its three adjacent hydroxyl groups form extremely stable complexes with iron, virtually eliminating non-heme iron absorption.

How to arrange timing

Separate Gallic Acid and iron supplements by at least 2 hours. Gallic acid is among the strongest polyphenolic iron chelators known.

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.