Aller au contenu

Interactions médicamenteuses

Lapatinib + Saquinavir

Gravité: Contre-indiquée

Lapatinib and Saquinavir: contraindicated interaction.

Dernière mise à jour

Réservé aux professionnels de santé — à titre de référence uniquement. Cette page est un bref résumé, pas un avis médical, et ne remplace ni la notice officielle ni le jugement clinique. Vérifiez toujours avant de prescrire ou de délivrer.

Le contenu clinique de cette page n'est disponible qu'en anglais.

Résumé

Saquinavir, usually boosted with ritonavir, is a strong CYP3A4 inhibitor that can greatly raise lapatinib exposure. Both drugs prolong the QT interval, so the risk of torsades de pointes and lapatinib toxicity increases.

Ce que signifie cette interaction, en termes simples

Lapatinib and Saquinavir 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.

Niveau de preuve: Moderate

Pourquoi elle survient

Saquinavir inhibits CYP3A4 metabolism of lapatinib, with additive QT prolongation.

Conduite à tenir

Avoid the combination and choose an alternative antiretroviral or kinase inhibitor. If it cannot be avoided, reduce lapatinib dose substantially and monitor ECG closely.

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.

Réservé aux membres Pro+

Débloquer la page complète

Créez un compte et lancez un essai Pro+ pour débloquer les conseils complets de prise en charge pour Lapatinib et Saquinavir, les notes complémentaires, le détail des données probantes et le vérificateur d'interactions pour une ordonnance complète.

  • Full clinical management advice
  • Additional notes
  • Evidence detail
  • Interaction checker for a whole prescription

Essayez Pro+ gratuitement pendant 14 jours sur le web. Sans carte.

Questions fréquentes

Can I take Lapatinib with Saquinavir?

MediHelp rates the interaction as contraindicated. Lapatinib and Saquinavir 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. Saquinavir, usually boosted with ritonavir, is a strong CYP3A4 inhibitor that can greatly raise lapatinib exposure. Both drugs prolong the QT interval, so the risk of torsades de pointes and lapatinib toxicity increases.

How serious is the interaction between Lapatinib and Saquinavir?

MediHelp rates it contraindicated, 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 an alternative antiretroviral or kinase inhibitor. If it cannot be avoided, reduce lapatinib dose substantially and monitor ECG closely.

What other medicines interact with Lapatinib?

MediHelp also lists interactions of Lapatinib with, for example, Dofetilide, Ibutilide, Pimozide. The full list is on the Lapatinib page.

Monographies complètes, posologies et vérificateur d'interactions dans l'application MediHelp

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

Parcourir de A à Z · Interactions médicamenteuses

Télécharger l'app Se connecter