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Interactions médicamenteuses

Arsenic trioxide + Lofexidine

Gravité: Majeure

Arsenic trioxide and Lofexidine: major interaction.

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Résumé

Arsenic trioxide markedly prolongs the QT interval and has caused torsade de pointes. Lofexidine adds further QT prolongation and bradycardia, increasing risk of life-threatening arrhythmia.

Ce que signifie cette interaction, en termes simples

Arsenic trioxide and Lofexidine 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.

Arsenic trioxide belongs to Oncology; Lofexidine belongs to Central Nervous System.

Niveau de preuve: Moderate

Pourquoi elle survient

Additive prolongation of cardiac repolarization.

Conduite à tenir

Avoid if possible; otherwise perform ECG monitoring and keep potassium and magnesium within normal range.

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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Questions fréquentes

Can I take Arsenic trioxide with Lofexidine?

MediHelp rates the interaction as major. Arsenic trioxide and Lofexidine 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. Arsenic trioxide markedly prolongs the QT interval and has caused torsade de pointes. Lofexidine adds further QT prolongation and bradycardia, increasing risk of life-threatening arrhythmia.

How serious is the interaction between Arsenic trioxide and Lofexidine?

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 if possible; otherwise perform ECG monitoring and keep potassium and magnesium within normal range.

What other medicines interact with Lofexidine?

MediHelp also lists interactions of Lofexidine with, for example, Adagrasib, Alfuzosin, Amiodarone. The full list is on the Lofexidine 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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