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Interactions médicamenteuses

Dofetilide + Haloperidol

Gravité: Contre-indiquée

Dofetilide and Haloperidol: contraindicated interaction.

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Résumé

Dofetilide markedly prolongs the QT interval and carries a high risk of torsades de pointes, which haloperidol compounds. The combination can result in life-threatening arrhythmias.

Ce que signifie cette interaction, en termes simples

Dofetilide and Haloperidol 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.

Dofetilide belongs to Cardiovascular; Haloperidol belongs to Central Nervous System.

Niveau de preuve: Moderate

Pourquoi elle survient

Additive QT prolongation through potassium channel (hERG) blockade.

Conduite à tenir

Avoid the combination; choose an alternative antipsychotic with minimal QT effect or a different antiarrhythmic. If unavoidable, give dofetilide only in a monitored setting with continuous ECG.

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 Dofetilide with Haloperidol?

MediHelp rates the interaction as contraindicated. Dofetilide and Haloperidol 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. Dofetilide markedly prolongs the QT interval and carries a high risk of torsades de pointes, which haloperidol compounds. The combination can result in life-threatening arrhythmias.

How serious is the interaction between Dofetilide and Haloperidol?

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; choose an alternative antipsychotic with minimal QT effect or a different antiarrhythmic. If unavoidable, give dofetilide only in a monitored setting with continuous ECG.

What other medicines interact with Haloperidol?

MediHelp also lists interactions of Haloperidol with, for example, Dronedarone, Ibutilide, Levoketoconazole. The full list is on the Haloperidol 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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