Potassium and Spironolactone
Supplement–drug interaction evidence from the TruthStack database.
| Severity | CRITICAL |
|---|---|
| Evidence Tier | Moderate |
| Interaction Type | CONTRAINDICATED |
| Mechanism | PHARMACODYNAMIC |
| Last Reviewed | 2026-02-15 |
Summary
Spironolactone is potassium-sparing. Combined with potassium supplementation equals extreme hyperkalemia risk. Can cause fatal cardiac arrest. This is one of the most dangerous supplement-drug interactions. This is a high-risk combination. Discuss with your prescriber or pharmacist before combining.
API Reference
GET https://api.truthstack.co/v1/check?c1=potassium&c2=spironolactone
Open, unauthenticated. Returns JSON. Developer documentation
Related Interactions
What this page is and is not. TruthStack is an informational reference database that describes published pharmacological findings. It does not provide medical advice, diagnosis, or treatment recommendations. The information on this page reflects flags in our database and should not replace consultation with a qualified healthcare provider. Always discuss supplement-drug combinations with your prescriber or pharmacist.