Aspirin and Spironolactone: Drug Interaction Guide
Quick answer: This combination requires caution. Aspirin and Spironolactone can be used together with adjustments and monitoring.
How Aspirin interacts with Spironolactone
Aspirin inhibits renal cyclooxygenase and prostaglandin synthesis, which can reduce renal perfusion and blunt spironolactone's natriuretic effect. Renal impairment and hyperkalaemia may also become more likely.
What you should do
Use the lowest necessary aspirin dose and monitor blood pressure, volume status, renal function, and serum potassium, particularly in older or volume-depleted patients.
Key facts
Severity
Moderate — caution required
Mechanism
Aspirin inhibits renal cyclooxygenase and prostaglandin synthesis, which can reduce renal perfusion and blunt spironolac...
Action
Use the lowest necessary aspirin dose and monitor blood pressure, volume status, renal function, and serum potassium, pa...
Frequently asked questions
Can I take Aspirin and Spironolactone together?
With caution. Use the lowest necessary aspirin dose and monitor blood pressure, volume status, renal function, and serum potassium, particularly in older or volume-depleted patients.
What is the severity of this interaction?
The interaction between Aspirin and Spironolactone is classified as Moderate — caution required. Aspirin inhibits renal cyclooxygenase and prostaglandin synthesis, which can reduce renal perfusion and blunt spironolactone's natriuretic effect. Renal impairment and hyperkalaemia may also become more likely.
What should I do if I'm prescribed both?
Use the lowest necessary aspirin dose and monitor blood pressure, volume status, renal function, and serum potassium, particularly in older or volume-depleted patients. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.