Posaconazole and Venetoclax: Drug Interaction Guide
Quick answer: This is a major interaction — avoid combining Posaconazole and Venetoclax unless specifically directed by your doctor.
How Posaconazole interacts with Venetoclax
Posaconazole strongly inhibits CYP3A4, the main metabolic pathway for venetoclax. Increased venetoclax exposure raises the risk of severe neutropenia and tumor lysis syndrome.
What you should do
Avoid when possible or follow disease-specific venetoclax dose-reduction protocols with close hematologic and tumor lysis monitoring.
Key facts
Severity
Major — avoid combination
Mechanism
Posaconazole strongly inhibits CYP3A4, the main metabolic pathway for venetoclax. Increased venetoclax exposure raises t...
Action
Avoid when possible or follow disease-specific venetoclax dose-reduction protocols with close hematologic and tumor lysi...
Frequently asked questions
Can I take Posaconazole and Venetoclax together?
No — this combination should generally be avoided. Avoid when possible or follow disease-specific venetoclax dose-reduction protocols with close hematologic and tumor lysis monitoring.
What is the severity of this interaction?
The interaction between Posaconazole and Venetoclax is classified as Major — avoid combination. Posaconazole strongly inhibits CYP3A4, the main metabolic pathway for venetoclax. Increased venetoclax exposure raises the risk of severe neutropenia and tumor lysis syndrome.
What should I do if I'm prescribed both?
Avoid when possible or follow disease-specific venetoclax dose-reduction protocols with close hematologic and tumor lysis monitoring. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.