Documented concern based on cited evidence — not a personalized safety check, not medical advice, and not a decision to combine or avoid. That decision belongs with your prescriber.

Significant interaction — talk to your prescriber before combining

Significant documented interaction. Talk to your prescriber before combining these two.

Mechanism and evidence

ACE inhibitors and ARBs lower aldosterone, which normally excretes potassium; adding a potassium supplement can push serum potassium into the arrhythmia range, especially with kidney disease or diabetes.

Evidence tier: pharmacology-standard

No single PMID anchors this pair: the grading rests on established pharmacology (label practice and clinical standard) as agreed with the reviewer.

What to discuss with your prescriber

  • Do not take potassium supplements on an ACE inhibitor or ARB without a doctor order and a potassium level.
  • This combination is standard pharmacology, not a theoretical edge case.

← All reviewed pairs for ACE inhibitors or ARBs (lisinopril, enalapril, losartan, valsartan)