Venetoclax and Voriconazole: Drug Interaction Guide

Quick answer: This is a major interaction — avoid combining Venetoclax and Voriconazole unless specifically directed by your doctor.

Interaction severity: Major — avoid combination

How Venetoclax interacts with Voriconazole

Voriconazole strongly inhibits CYP3A4, substantially increasing venetoclax exposure and the risks of tumor lysis syndrome and hematologic toxicity.

What you should do

Avoid voriconazole during venetoclax initiation and dose ramp-up when contraindicated by the treatment protocol. If coadministration is unavoidable outside that period, apply the indication-specific venetoclax dose reduction and monitor closely.

Key facts

Severity

Major — avoid combination

Mechanism

Voriconazole strongly inhibits CYP3A4, substantially increasing venetoclax exposure and the risks of tumor lysis syndrom...

Action

Avoid voriconazole during venetoclax initiation and dose ramp-up when contraindicated by the treatment protocol. If coad...

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 Venetoclax and Voriconazole together?

No — this combination should generally be avoided. Avoid voriconazole during venetoclax initiation and dose ramp-up when contraindicated by the treatment protocol. If coadministration is unavoidable outside that period, apply the indication-specific venetoclax dose reduction and monitor closely.

What is the severity of this interaction?

The interaction between Venetoclax and Voriconazole is classified as Major — avoid combination. Voriconazole strongly inhibits CYP3A4, substantially increasing venetoclax exposure and the risks of tumor lysis syndrome and hematologic toxicity.

What should I do if I'm prescribed both?

Avoid voriconazole during venetoclax initiation and dose ramp-up when contraindicated by the treatment protocol. If coadministration is unavoidable outside that period, apply the indication-specific venetoclax dose reduction and monitor closely. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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