Budesonide and Ketoconazole: Drug Interaction Guide

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

Interaction severity: Moderate — caution required

How Budesonide interacts with Ketoconazole

Ketoconazole strongly inhibits intestinal and hepatic CYP3A4, markedly reducing budesonide metabolism and increasing systemic corticosteroid exposure.

What you should do

Prefer an alternative antifungal; if combination therapy is unavoidable, minimize the budesonide dose and monitor for adrenal suppression and Cushingoid effects.

Key facts

Severity

Moderate — caution required

Mechanism

Ketoconazole strongly inhibits intestinal and hepatic CYP3A4, markedly reducing budesonide metabolism and increasing sys...

Action

Prefer an alternative antifungal; if combination therapy is unavoidable, minimize the budesonide dose and monitor for ad...

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 Budesonide and Ketoconazole together?

With caution. Prefer an alternative antifungal; if combination therapy is unavoidable, minimize the budesonide dose and monitor for adrenal suppression and Cushingoid effects.

What is the severity of this interaction?

The interaction between Budesonide and Ketoconazole is classified as Moderate — caution required. Ketoconazole strongly inhibits intestinal and hepatic CYP3A4, markedly reducing budesonide metabolism and increasing systemic corticosteroid exposure.

What should I do if I'm prescribed both?

Prefer an alternative antifungal; if combination therapy is unavoidable, minimize the budesonide dose and monitor for adrenal suppression and Cushingoid effects. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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