Does Caffeine Affect Potassium?

May affect absorption or how you feel

The short answer

Caffeine's diuretic action increases urinary potassium excretion, potentially reducing supplemental potassium effectiveness.

How to arrange timing

Stay hydrated and separate potassium supplements from high caffeine intake by 1 hour.

Reference

Reference noted for this food and supplement combination: Passmore et al. 1987; 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.