Fentanyl and Fluconazole: Drug Interaction Guide

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

Interaction severity: Moderate — caution required

How Fentanyl interacts with Fluconazole

Fluconazole inhibits CYP3A4, reducing fentanyl metabolism and increasing opioid exposure.

What you should do

Use lower fentanyl doses if needed and monitor closely for sedation and respiratory depression.

Key facts

Severity

Moderate — caution required

Mechanism

Fluconazole inhibits CYP3A4, reducing fentanyl metabolism and increasing opioid exposure.

Action

Use lower fentanyl doses if needed and monitor closely for sedation and respiratory depression.

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 Fentanyl and Fluconazole together?

With caution. Use lower fentanyl doses if needed and monitor closely for sedation and respiratory depression.

What is the severity of this interaction?

The interaction between Fentanyl and Fluconazole is classified as Moderate — caution required. Fluconazole inhibits CYP3A4, reducing fentanyl metabolism and increasing opioid exposure.

What should I do if I'm prescribed both?

Use lower fentanyl doses if needed and monitor closely for sedation and respiratory depression. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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