Drug interactions
Carbamazepine + Tazemetostat
Severity: Major
Carbamazepine and Tazemetostat: major 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
Carbamazepine may lower tazemetostat exposure and reduce antitumor efficacy. Tazemetostat is metabolized mainly by CYP3A4.
What this interaction means in plain words
Carbamazepine and Tazemetostat can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Carbamazepine belongs to Central Nervous System; Tazemetostat belongs to Miscellaneous.
Why it happens
CYP3A4 induction by carbamazepine increases tazemetostat clearance.
What to do
Avoid strong CYP3A4 inducers and use a non-inducing anticonvulsant. If unavoidable, monitor tumor response.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Carbamazepine
- Artemether / lumefantrine + Carbamazepine Contraindicated
- Cabotegravir + Carbamazepine Contraindicated
- Carbamazepine + Delamanid Contraindicated
- Carbamazepine + Dienogest / estradiol valerate Contraindicated
- Carbamazepine + Doravirine Contraindicated
- Carbamazepine + Elbasvir / grazoprevir Contraindicated
Other interactions of Tazemetostat
Frequently asked questions
Can I take Carbamazepine with Tazemetostat?
MediHelp rates the interaction as major. Carbamazepine and Tazemetostat can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Carbamazepine may lower tazemetostat exposure and reduce antitumor efficacy. Tazemetostat is metabolized mainly by CYP3A4.
How serious is the interaction between Carbamazepine and Tazemetostat?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid strong CYP3A4 inducers and use a non-inducing anticonvulsant. If unavoidable, monitor tumor response.
What other medicines interact with Carbamazepine?
MediHelp also lists interactions of Carbamazepine with, for example, Artemether / lumefantrine, Cabotegravir, Delamanid. The full list is on the Carbamazepine page.
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