Drug interactions
Carbamazepine + Neratinib
Severity: Major
Carbamazepine and Neratinib: 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 substantially lowers neratinib exposure and may reduce its efficacy in breast cancer.
What this interaction means in plain words
Carbamazepine and Neratinib 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; Neratinib belongs to Oncology.
Why it happens
Carbamazepine induces CYP3A4, increasing neratinib metabolism.
What to do
Avoid combination and use a non-inducing antiseizure drug.
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 Neratinib
- Amiodarone + Neratinib Major
- Amobarbital + Neratinib Major
- Aprepitant + Neratinib Major
- Armodafinil + Neratinib Major
- Bosentan + Neratinib Major
- Cimetidine + Neratinib Major
Frequently asked questions
Can I take Carbamazepine with Neratinib?
MediHelp rates the interaction as major. Carbamazepine and Neratinib 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 substantially lowers neratinib exposure and may reduce its efficacy in breast cancer.
How serious is the interaction between Carbamazepine and Neratinib?
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 combination and use a non-inducing antiseizure drug.
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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