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Interactions médicamenteuses

Phenytoin + Sofosbuvir-velpatasvir-voxilaprevir

Gravité: Contre-indiquée

Phenytoin and Sofosbuvir-velpatasvir-voxilaprevir: contraindicated interaction.

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Résumé

Phenytoin induces CYP3A4, CYP2B6 and P-gp and is expected to substantially lower exposure to sofosbuvir, velpatasvir and voxilaprevir. This risks virologic failure. Labeling recommends against use together.

Ce que signifie cette interaction, en termes simples

Phenytoin and Sofosbuvir-velpatasvir-voxilaprevir are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.

Phenytoin belongs to Central Nervous System; Sofosbuvir-velpatasvir-voxilaprevir belongs to Anti Virals.

Niveau de preuve: Moderate

Pourquoi elle survient

Induction of CYP enzymes and P-glycoprotein by phenytoin reduces absorption and increases clearance of the antiviral components.

Conduite à tenir

Do not coadminister; change to a non-inducing antiepileptic before starting HCV therapy.

Questions à poser à votre pharmacien

  • Is there an alternative to one of these two medicines for me?
  • If both are essential, who is monitoring me and how often?
  • Which symptoms mean I should stop and seek help straight away?

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

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Questions fréquentes

Can I take Phenytoin with Sofosbuvir-velpatasvir-voxilaprevir?

MediHelp rates the interaction as contraindicated. Phenytoin and Sofosbuvir-velpatasvir-voxilaprevir are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Phenytoin induces CYP3A4, CYP2B6 and P-gp and is expected to substantially lower exposure to sofosbuvir, velpatasvir and voxilaprevir. This risks virologic failure. Labeling recommends against use together.

How serious is the interaction between Phenytoin and Sofosbuvir-velpatasvir-voxilaprevir?

MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not coadminister; change to a non-inducing antiepileptic before starting HCV therapy.

What other medicines interact with Sofosbuvir-velpatasvir-voxilaprevir?

MediHelp also lists interactions of Sofosbuvir-velpatasvir-voxilaprevir with, for example, Fosphenytoin, Phenobarbital, Primidone. The full list is on the Sofosbuvir-velpatasvir-voxilaprevir page.

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Ouvrez le référentiel complet, vérifiez les interactions entre plusieurs médicaments et utilisez les outils de posologie dans l'application MediHelp.

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