Drug interactions
Brentuximab vedotin + Ketoconazole
Severity: Moderate
Brentuximab vedotin and Ketoconazole: 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
Ketoconazole increases exposure to the cytotoxic component of brentuximab vedotin (MMAE). This may increase the risk of neutropenia and other toxicities.
What this interaction means in plain words
Brentuximab vedotin and Ketoconazole 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; Ketoconazole belongs to Anti Fungals.
Why it happens
Ketoconazole inhibits CYP3A4, which metabolizes monomethyl auristatin E (MMAE).
What to do
Monitor closely for neutropenia and other adverse reactions with blood counts, and consider dose modification or treatment delay if toxicity develops.
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 Ketoconazole
- Alfuzosin + Ketoconazole Contraindicated
- Alprazolam + Ketoconazole Contraindicated
- Avanafil + Ketoconazole Contraindicated
- Conivaptan + Ketoconazole Contraindicated
- Dihydroergotamine intranasal + Ketoconazole Contraindicated
- Dihydroergotamine + Ketoconazole 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 Ketoconazole?
MediHelp rates the interaction as moderate. Brentuximab vedotin and Ketoconazole 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. Ketoconazole increases exposure to the cytotoxic component of brentuximab vedotin (MMAE). This may increase the risk of neutropenia and other toxicities.
How serious is the interaction between Brentuximab vedotin and Ketoconazole?
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 with blood counts, and consider dose modification or treatment delay if toxicity develops.
What other medicines interact with Ketoconazole?
MediHelp also lists interactions of Ketoconazole with, for example, Alfuzosin, Alprazolam, Avanafil. The full list is on the Ketoconazole page.
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