Does Tea Affect Magnesium?

May affect absorption or how you feel

The short answer

Tannins and oxalates in tea chelate magnesium ions, forming insoluble complexes that reduce absorption by up to 60%.

How to arrange timing

Take magnesium supplements at least 2 hours apart from tea.

Reference

Reference noted for this food and supplement combination: NIH ODS 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.