Drug interactions
Eslicarbazepine + Lapatinib
Severity: Major
Eslicarbazepine and Lapatinib: major interaction.
Last updated Sources: UK SmPC
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
Eslicarbazepine may lower lapatinib exposure and reduce antitumor efficacy. Strong inducers cause a marked fall in lapatinib levels.
What this interaction means in plain words
Eslicarbazepine and Lapatinib 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.
Eslicarbazepine belongs to Central Nervous System; Lapatinib belongs to Oncology.
Why it happens
CYP3A4 induction increases lapatinib metabolism.
What to do
Use a non-inducing antiseizure drug if possible; otherwise monitor response closely and consider lapatinib dose adjustment with oncology guidance.
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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References
- Eslicarbazepine Amarox 200 mg tablets - SmPC sections 4.3/4.5 (class statement: medicinal products that are mainly eliminated by metabolism through CYP3A4; "In vivo eslicarbazepine showed an inducing effect on the metabolism of medicinal products that are mainly eliminated by metabolism through CYP… — electronic medicines compendium (UK SmPC)
Other interactions of Eslicarbazepine
- Eslicarbazepine + Mavacamten Contraindicated
- Eslicarbazepine + Rilpivirine Contraindicated
- Artemether / lumefantrine + Eslicarbazepine Major
- Avapritinib + Eslicarbazepine Major
- Bedaquiline + Eslicarbazepine Major
- Benzhydrocodone / acetaminophen + Eslicarbazepine Major
Other interactions of Lapatinib
- Dofetilide + Lapatinib Contraindicated
- Ibutilide + Lapatinib Contraindicated
- Lapatinib + Pimozide Contraindicated
- Lapatinib + Saquinavir Contraindicated
- Lapatinib + Thioridazine Contraindicated
- Adagrasib + Lapatinib Major
Frequently asked questions
Can I take Eslicarbazepine with Lapatinib?
MediHelp rates the interaction as major. Eslicarbazepine and Lapatinib 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. Eslicarbazepine may lower lapatinib exposure and reduce antitumor efficacy. Strong inducers cause a marked fall in lapatinib levels.
How serious is the interaction between Eslicarbazepine and Lapatinib?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use a non-inducing antiseizure drug if possible; otherwise monitor response closely and consider lapatinib dose adjustment with oncology guidance.
What other medicines interact with Eslicarbazepine?
MediHelp also lists interactions of Eslicarbazepine with, for example, Mavacamten, Rilpivirine, Artemether / lumefantrine. The full list is on the Eslicarbazepine page.
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