Quinapril and Spironolactone: Drug Interaction Guide
Quick answer: This combination requires caution. Quinapril and Spironolactone can be used together with adjustments and monitoring.
How Quinapril interacts with Spironolactone
ACE inhibition reduces aldosterone-mediated potassium excretion, and spironolactone blocks mineralocorticoid receptors in the distal nephron. The combination increases hyperkalaemia risk, particularly with renal impairment.
What you should do
Check potassium and renal function before and after initiation or dose changes. Avoid potassium supplements and use caution in chronic kidney disease or older adults.
Key facts
Severity
Moderate — caution required
Mechanism
ACE inhibition reduces aldosterone-mediated potassium excretion, and spironolactone blocks mineralocorticoid receptors i...
Action
Check potassium and renal function before and after initiation or dose changes. Avoid potassium supplements and use caut...
Frequently asked questions
Can I take Quinapril and Spironolactone together?
With caution. Check potassium and renal function before and after initiation or dose changes. Avoid potassium supplements and use caution in chronic kidney disease or older adults.
What is the severity of this interaction?
The interaction between Quinapril and Spironolactone is classified as Moderate — caution required. ACE inhibition reduces aldosterone-mediated potassium excretion, and spironolactone blocks mineralocorticoid receptors in the distal nephron. The combination increases hyperkalaemia risk, particularly with renal impairment.
What should I do if I'm prescribed both?
Check potassium and renal function before and after initiation or dose changes. Avoid potassium supplements and use caution in chronic kidney disease or older adults. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.