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Interazioni tra farmaci

Letermovir + Phenobarbitone

Gravità: Maggiore

Letermovir and Phenobarbitone: major interaction.

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Sintesi

Phenobarbitone may lower letermovir plasma concentrations, which could compromise prevention of cytomegalovirus infection in transplant recipients. Labeling advises against the combination.

Cosa significa questa interazione in parole semplici

Letermovir and Phenobarbitone 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.

Letermovir belongs to Anti Virals; Phenobarbitone belongs to Central Nervous System.

Livello di evidenza: Moderate

Perché avviene

Enzyme induction by phenobarbitone (including UGT and CYP pathways) increases letermovir clearance.

Cosa fare

Avoid the combination and choose a non-inducing anticonvulsant where possible. If it cannot be avoided, monitor for CMV breakthrough.

Cosa chiedere al farmacista

  • 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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Domande frequenti

Can I take Letermovir with Phenobarbitone?

MediHelp rates the interaction as major. Letermovir and Phenobarbitone 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. Phenobarbitone may lower letermovir plasma concentrations, which could compromise prevention of cytomegalovirus infection in transplant recipients. Labeling advises against the combination.

How serious is the interaction between Letermovir and Phenobarbitone?

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 choose a non-inducing anticonvulsant where possible. If it cannot be avoided, monitor for CMV breakthrough.

What other medicines interact with Letermovir?

MediHelp also lists interactions of Letermovir with, for example, Ergotamine, Pimozide, Apalutamide. The full list is on the Letermovir page.

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