Does Tea Affect Iodine?

May affect absorption or how you feel

The short answer

Fluoride and polyphenols in tea may compete with iodine absorption in the thyroid, potentially affecting thyroid function.

How to arrange timing

Take iodine 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.