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Interactions médicamenteuses

Dronedarone + Ritonavir

Gravité: Contre-indiquée

Dronedarone and Ritonavir: contraindicated interaction.

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Résumé

Ritonavir is a potent CYP3A4 inhibitor and markedly raises dronedarone levels, increasing the risk of QT prolongation and torsades de pointes. Dronedarone may also modestly raise ritonavir exposure through P-glycoprotein inhibition.

Ce que signifie cette interaction, en termes simples

Dronedarone and Ritonavir 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.

Dronedarone belongs to Cardiovascular; Ritonavir belongs to Anti Virals.

Niveau de preuve: High

Pourquoi elle survient

Potent CYP3A4 inhibition by ritonavir reduces dronedarone clearance, with additional P-glycoprotein inhibition by dronedarone.

Conduite à tenir

Do not coadminister; select an alternative antiarrhythmic or antiretroviral regimen.

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 Dronedarone with Ritonavir?

MediHelp rates the interaction as contraindicated. Dronedarone and Ritonavir 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. Ritonavir is a potent CYP3A4 inhibitor and markedly raises dronedarone levels, increasing the risk of QT prolongation and torsades de pointes. Dronedarone may also modestly raise ritonavir exposure through P-glycoprotein inhibition.

How serious is the interaction between Dronedarone and Ritonavir?

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; select an alternative antiarrhythmic or antiretroviral regimen.

What other medicines interact with Dronedarone?

MediHelp also lists interactions of Dronedarone with, for example, Adagrasib, Amiodarone, Arsenic trioxide. The full list is on the Dronedarone page.

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