Does Dairy Affect Vitamin C?

May affect absorption or how you feel

The short answer

Dairy's pH buffering effect raises stomach pH, which can reduce the stability and absorption of ascorbic acid (vitamin C).

How to arrange timing

Take vitamin C at least 1 hour apart from dairy for best absorption.

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.