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Interactions médicamenteuses

Methyldopa + Thioridazine

Gravité: Majeure

Methyldopa and Thioridazine: major interaction.

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Résumé

Thioridazine has strong alpha-blocking and sedative activity that can produce marked additive hypotension with methyldopa. Thioridazine also carries a significant risk of QT prolongation, which adds to the concern in patients with cardiovascular disease. The interaction is mainly hemodynamic.

Ce que signifie cette interaction, en termes simples

Methyldopa and Thioridazine 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.

Methyldopa belongs to Cardiovascular; Thioridazine belongs to Central Nervous System.

Niveau de preuve: Low

Pourquoi elle survient

Additive hypotension from alpha-1 blockade and central sympatholytic effects, with possible dopaminergic antagonism.

Conduite à tenir

Avoid if possible, preferring an antipsychotic with less alpha-blockade and QT risk. If combined, monitor blood pressure and ECG closely.

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 Methyldopa with Thioridazine?

MediHelp rates the interaction as major. Methyldopa and Thioridazine 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. Thioridazine has strong alpha-blocking and sedative activity that can produce marked additive hypotension with methyldopa. Thioridazine also carries a significant risk of QT prolongation, which adds to the concern in patients with cardiovascular disease. The interaction is mainly hemodynamic.

How serious is the interaction between Methyldopa and Thioridazine?

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, preferring an antipsychotic with less alpha-blockade and QT risk. If combined, monitor blood pressure and ECG closely.

What other medicines interact with Methyldopa?

MediHelp also lists interactions of Methyldopa with, for example, Tranylcypromine, Iobenguane i, Lofexidine. The full list is on the Methyldopa 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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