Does Tea Affect Vitamin B12?

May affect absorption or how you feel

The short answer

Tannins in tea may reduce vitamin B12 absorption by binding to it in the stomach, reducing its availability for intrinsic factor binding.

How to arrange timing

Take B12 supplements at least 1 hour 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.