Does Soy foods Affect Vitamin B12?

May affect absorption or how you feel

The short answer

Soy isoflavones may interfere with B12 absorption in the gut.

How to arrange timing

Separate B12 from soy products by at least 1 hour.

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.