Can You Take Phosphorus and Potassium Together?

Dose or timing may matter

The short answer

Both phosphorus and potassium are primarily excreted by the kidneys. Supplementing both at high doses challenges renal electrolyte homeostasis and may accelerate kidney function decline in susceptible individuals.

How to arrange timing

Stay within recommended intake levels for both minerals. Individuals with any degree of renal impairment should seek medical advice.

Reference

Reference noted for this combination: Chang AR et al. Am J Kidney Dis. 2017;69(2):S7; Palmer BF. N Engl J Med. 2004;351(6):585-592

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.