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Interactions médicamenteuses

Clarithromycin + Umeclidinium-vilanterol

Gravité: Majeure

Clarithromycin and Umeclidinium-vilanterol: major interaction.

Dernière mise à jour Sources: Health Canada product monograph

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Résumé

Clarithromycin prolongs the QT interval and also inhibits CYP3A4 and P-glycoprotein, which can increase systemic vilanterol exposure. Both effects may raise the risk of tachycardia and ventricular arrhythmia.

Ce que signifie cette interaction, en termes simples

Clarithromycin and Umeclidinium-vilanterol 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.

Clarithromycin belongs to Anti Bacterial; Umeclidinium-vilanterol belongs to Respiratory.

Niveau de preuve: Moderate

Pourquoi elle survient

CYP3A4 inhibition raising vilanterol exposure, plus additive QT prolongation.

Conduite à tenir

Prefer an alternative antibiotic such as azithromycin with caution or a non-macrolide agent. If unavoidable, monitor ECG, electrolytes and heart rate for cardiovascular beta-agonist effects.

Questions à poser à votre pharmacien

  • 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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Références

Questions fréquentes

Can I take Clarithromycin with Umeclidinium-vilanterol?

MediHelp rates the interaction as major. Clarithromycin and Umeclidinium-vilanterol 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. Clarithromycin prolongs the QT interval and also inhibits CYP3A4 and P-glycoprotein, which can increase systemic vilanterol exposure. Both effects may raise the risk of tachycardia and ventricular arrhythmia.

How serious is the interaction between Clarithromycin and Umeclidinium-vilanterol?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Prefer an alternative antibiotic such as azithromycin with caution or a non-macrolide agent. If unavoidable, monitor ECG, electrolytes and heart rate for cardiovascular beta-agonist effects.

What other medicines interact with Umeclidinium-vilanterol?

MediHelp also lists interactions of Umeclidinium-vilanterol with, for example, Aclidinium, Amiodarone, Amitriptyline. The full list is on the Umeclidinium-vilanterol page.

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