Drug interactions
Brentuximab vedotin + Isoniazid
Severity: Moderate
Brentuximab vedotin and Isoniazid: 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, so CYP3A4 inhibitors can raise its exposure and the risk of neutropenia. Isoniazid is only a weak inhibitor, so any effect is likely modest. Isoniazid also adds neuropathy and hepatotoxicity risk.
What this interaction means in plain words
Brentuximab vedotin and Isoniazid 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; Isoniazid belongs to Anti Bacterial.
Why it happens
Possible weak CYP3A4 inhibition by isoniazid increasing MMAE exposure, with additive neurotoxicity.
What to do
Monitor blood counts for neutropenia and for peripheral neuropathy. Give pyridoxine as per isoniazid practice.
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 Isoniazid
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 + Itraconazole Moderate
Frequently asked questions
Can I take Brentuximab vedotin with Isoniazid?
MediHelp rates the interaction as moderate. Brentuximab vedotin and Isoniazid 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, so CYP3A4 inhibitors can raise its exposure and the risk of neutropenia. Isoniazid is only a weak inhibitor, so any effect is likely modest. Isoniazid also adds neuropathy and hepatotoxicity risk.
How serious is the interaction between Brentuximab vedotin and Isoniazid?
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 blood counts for neutropenia and for peripheral neuropathy. Give pyridoxine as per isoniazid practice.
What other medicines interact with Isoniazid?
MediHelp also lists interactions of Isoniazid with, for example, Bacillus calmette-guerin substrain tice, Benzhydrocodone / acetaminophen, Carbamazepine. The full list is on the Isoniazid page.
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