Does Dairy Affect Iodine?

May affect absorption or how you feel

The short answer

High calcium and casein in dairy may slightly reduce iodine absorption, though dairy itself contains some iodine.

How to arrange timing

Take iodine supplements at least 1 hour from dairy for optimal 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.