Does Caffeine Affect Vitamin D3?

May affect absorption or how you feel

The short answer

Caffeine may modestly reduce vitamin D receptor expression.

How to arrange timing

Take vitamin D at least 1 hour apart from caffeine.

Reference

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

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.