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Irbesartan and Spironolactone: Drug Interaction Guide

Quick answer: This combination requires caution. Irbesartan and Spironolactone can be used together with adjustments and monitoring.

Interaction severity: Moderate — caution required

How Irbesartan interacts with Spironolactone

Both agents reduce aldosterone-mediated potassium excretion, leading to additive hyperkalaemia, especially in renal impairment or diabetes.

What you should do

Monitor serum potassium and creatinine within one week of initiation and after any dose increase; avoid potassium supplements.

Key facts

Severity

Moderate — caution required

Mechanism

Both agents reduce aldosterone-mediated potassium excretion, leading to additive hyperkalaemia, especially in renal impa...

Action

Monitor serum potassium and creatinine within one week of initiation and after any dose increase; avoid potassium supple...

Important medical disclaimer: This page provides educational information about drug interactions for general reference. It is not a substitute for professional medical advice, diagnosis, or treatment. Always discuss your specific medications with a qualified healthcare provider before starting, stopping, or changing any treatment. About our editorial team.

Frequently asked questions

Can I take Irbesartan and Spironolactone together?

With caution. Monitor serum potassium and creatinine within one week of initiation and after any dose increase; avoid potassium supplements.

What is the severity of this interaction?

The interaction between Irbesartan and Spironolactone is classified as Moderate — caution required. Both agents reduce aldosterone-mediated potassium excretion, leading to additive hyperkalaemia, especially in renal impairment or diabetes.

What should I do if I'm prescribed both?

Monitor serum potassium and creatinine within one week of initiation and after any dose increase; avoid potassium supplements. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

Last reviewed: by iMedic Medical Editorial Team. Our editorial process.