Lisinopril and Spironolactone: Drug Interaction Guide
Quick answer: This combination requires caution. Lisinopril and Spironolactone can be used together with adjustments and monitoring.
How Lisinopril interacts with Spironolactone
Both drugs reduce renal potassium excretion (ACE inhibition reduces aldosterone; spironolactone blocks the mineralocorticoid receptor), causing additive risk of hyperkalemia, particularly with renal impairment.
What you should do
Monitor serum potassium and creatinine within 1-2 weeks of initiation, then periodically; avoid potassium supplements and review NSAID use.
Key facts
Severity
Moderate — caution required
Mechanism
Both drugs reduce renal potassium excretion (ACE inhibition reduces aldosterone; spironolactone blocks the mineralocorti...
Action
Monitor serum potassium and creatinine within 1-2 weeks of initiation, then periodically; avoid potassium supplements an...
Frequently asked questions
Can I take Lisinopril and Spironolactone together?
With caution. Monitor serum potassium and creatinine within 1-2 weeks of initiation, then periodically; avoid potassium supplements and review NSAID use.
What is the severity of this interaction?
The interaction between Lisinopril and Spironolactone is classified as Moderate — caution required. Both drugs reduce renal potassium excretion (ACE inhibition reduces aldosterone; spironolactone blocks the mineralocorticoid receptor), causing additive risk of hyperkalemia, particularly with renal impairment.
What should I do if I'm prescribed both?
Monitor serum potassium and creatinine within 1-2 weeks of initiation, then periodically; avoid potassium supplements and review NSAID use. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.