Drug interactions
Lenacapavir + Oxcarbazepine
Severity: Major
Lenacapavir and Oxcarbazepine: 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
Oxcarbazepine may lower lenacapavir levels. Subtherapeutic antiretroviral exposure risks virologic failure and resistance. Lenacapavir labeling recommends against combining with inducers of this type.
What this interaction means in plain words
Lenacapavir and Oxcarbazepine 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.
Lenacapavir belongs to Anti Virals; Oxcarbazepine belongs to Central Nervous System.
Why it happens
Induction of CYP3A4 (and possibly P-gp) by oxcarbazepine increases lenacapavir clearance.
What to do
Avoid the combination and use a non-inducing anticonvulsant such as levetiracetam. Monitor HIV viral load if coadministration occurs.
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 Oxcarbazepine
- Cabotegravir + Oxcarbazepine Contraindicated
- Oxcarbazepine + Rilpivirine Contraindicated
- Artemether / lumefantrine + Oxcarbazepine Major
- Atazanavir + Oxcarbazepine Major
- Benzhydrocodone / acetaminophen + Oxcarbazepine Major
- Bictegravir + Oxcarbazepine Major
Other interactions of Lenacapavir
- Apalutamide + Lenacapavir Contraindicated
- Carbamazepine + Lenacapavir Contraindicated
- Enzalutamide + Lenacapavir Contraindicated
- Flibanserin + Lenacapavir Contraindicated
- Lenacapavir + Phenytoin Contraindicated
- Lenacapavir + Rifampicin Contraindicated
Frequently asked questions
Can I take Lenacapavir with Oxcarbazepine?
MediHelp rates the interaction as major. Lenacapavir and Oxcarbazepine 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. Oxcarbazepine may lower lenacapavir levels. Subtherapeutic antiretroviral exposure risks virologic failure and resistance. Lenacapavir labeling recommends against combining with inducers of this type.
How serious is the interaction between Lenacapavir and Oxcarbazepine?
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 the combination and use a non-inducing anticonvulsant such as levetiracetam. Monitor HIV viral load if coadministration occurs.
What other medicines interact with Oxcarbazepine?
MediHelp also lists interactions of Oxcarbazepine with, for example, Cabotegravir, Rilpivirine, Artemether / lumefantrine. The full list is on the Oxcarbazepine page.
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