Does Dairy Affect Grape Seed Extract?

May affect absorption or how you feel

The short answer

Casein in dairy binds proanthocyanidins from grape seed extract, significantly reducing their antioxidant absorption.

How to arrange timing

Take grape seed extract at least 1 hour from dairy.

Reference

Reference noted for this food and supplement combination: Examine.com 2024

Important context

The effect can also change with food amount, supplement 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.