Drug interactions
Carbamazepine + Dabrafenib
Severity: Major
Carbamazepine and Dabrafenib: 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 can substantially lower dabrafenib exposure and reduce antitumor efficacy. Dabrafenib itself is an inducer, so effects on carbamazepine levels may also occur.
What this interaction means in plain words
Carbamazepine and Dabrafenib 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; Dabrafenib belongs to Oncology.
Why it happens
Induction of CYP3A4 and CYP2C8 increases dabrafenib metabolism.
What to do
Avoid combining and substitute a non-inducing anticonvulsant. If it is required, monitor tumor response and carbamazepine levels.
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 Dabrafenib
Frequently asked questions
Can I take Carbamazepine with Dabrafenib?
MediHelp rates the interaction as major. Carbamazepine and Dabrafenib 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 can substantially lower dabrafenib exposure and reduce antitumor efficacy. Dabrafenib itself is an inducer, so effects on carbamazepine levels may also occur.
How serious is the interaction between Carbamazepine and Dabrafenib?
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 combining and substitute a non-inducing anticonvulsant. If it is required, monitor tumor response and carbamazepine levels.
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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