Can You Take Caffeine and Potassium Together?

Dose or timing may matter

The short answer

Caffeine increases blood pressure and may promote potassium excretion via diuresis, while potassium supplementation aims to lower blood pressure. The effects may partially counteract each other.

How to arrange timing

High caffeine intake may reduce potassium's BP-lowering benefit. Consider moderating caffeine if supplementing potassium for blood pressure.

Reference

Reference noted for this combination: Whelton PK et al. Effects of oral potassium on blood pressure. JAMA. 1997;277(20):1624-1632

Important context

Whether supplements suit you together also depends on 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.