Fluconazole and Glimepiride: Drug Interaction Guide

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

Interaction severity: Moderate — caution required

How Fluconazole interacts with Glimepiride

Fluconazole inhibits CYP2C9-mediated metabolism of glimepiride, increasing plasma levels and the risk of prolonged hypoglycaemia.

What you should do

Monitor capillary glucose closely and consider a 25–50% reduction of sulfonylurea dose during fluconazole therapy.

Key facts

Severity

Moderate — caution required

Mechanism

Fluconazole inhibits CYP2C9-mediated metabolism of glimepiride, increasing plasma levels and the risk of prolonged hypog...

Action

Monitor capillary glucose closely and consider a 25–50% reduction of sulfonylurea dose during fluconazole therapy.

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 Fluconazole and Glimepiride together?

With caution. Monitor capillary glucose closely and consider a 25–50% reduction of sulfonylurea dose during fluconazole therapy.

What is the severity of this interaction?

The interaction between Fluconazole and Glimepiride is classified as Moderate — caution required. Fluconazole inhibits CYP2C9-mediated metabolism of glimepiride, increasing plasma levels and the risk of prolonged hypoglycaemia.

What should I do if I'm prescribed both?

Monitor capillary glucose closely and consider a 25–50% reduction of sulfonylurea dose during fluconazole therapy. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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