Drug interactions
Brentuximab vedotin + Posaconazole
Severity: Moderate
Brentuximab vedotin and Posaconazole: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
The cytotoxic component of brentuximab vedotin, MMAE, is metabolized by CYP3A4. Strong inhibitors such as posaconazole can increase MMAE exposure, raising the risk of neutropenia and other toxicities.
What this interaction means in plain words
Brentuximab vedotin and Posaconazole can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Brentuximab vedotin belongs to Oncology; Posaconazole belongs to Anti Fungals.
Why it happens
Posaconazole inhibits CYP3A4, reducing the clearance of the released MMAE.
What to do
Monitor closely for neutropenia and other adverse reactions, including peripheral neuropathy. Manage toxicity by holding or adjusting brentuximab per labeling.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Posaconazole
- Artemether + Posaconazole Contraindicated
- Avanafil + Posaconazole Contraindicated
- Cobimetinib + Posaconazole Contraindicated
- Conivaptan + Posaconazole Contraindicated
- Dihydroergotamine intranasal + Posaconazole Contraindicated
- Dihydroergotamine + Posaconazole Contraindicated
Other interactions of Brentuximab vedotin
- Bleomycin + Brentuximab vedotin Contraindicated
- Brentuximab vedotin + Siponimod Major
- Apalutamide + Brentuximab vedotin Moderate
- Brentuximab vedotin + Clarithromycin Moderate
- Brentuximab vedotin + Imatinib Moderate
- Brentuximab vedotin + Isoniazid Moderate
Frequently asked questions
Can I take Brentuximab vedotin with Posaconazole?
MediHelp rates the interaction as moderate. Brentuximab vedotin and Posaconazole can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. The cytotoxic component of brentuximab vedotin, MMAE, is metabolized by CYP3A4. Strong inhibitors such as posaconazole can increase MMAE exposure, raising the risk of neutropenia and other toxicities.
How serious is the interaction between Brentuximab vedotin and Posaconazole?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor closely for neutropenia and other adverse reactions, including peripheral neuropathy. Manage toxicity by holding or adjusting brentuximab per labeling.
What other medicines interact with Posaconazole?
MediHelp also lists interactions of Posaconazole with, for example, Artemether, Avanafil, Cobimetinib. The full list is on the Posaconazole page.
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