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MediHelp Référence médicamenteuse

Interactions médicamenteuses

Amitriptyline + Primidone

Gravité: Majeure

Amitriptyline and Primidone: major interaction.

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Résumé

Primidone is metabolized to phenobarbital, which induces hepatic enzymes and may reduce amitriptyline levels. Additive sedation is also likely, and tricyclics may lower the seizure threshold.

Ce que signifie cette interaction, en termes simples

Amitriptyline and Primidone 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.

Amitriptyline belongs to Central Nervous System; Primidone belongs to Central Nervous System.

Niveau de preuve: Moderate

Pourquoi elle survient

Enzyme induction (CYP3A4 and CYP2C19) by primidone and its phenobarbital metabolite, plus additive CNS depression.

Conduite à tenir

Monitor for loss of antidepressant effect, sedation, and seizure control, and adjust amitriptyline dose by response or levels. Reassess dosing if primidone is stopped.

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 Amitriptyline with Primidone?

MediHelp rates the interaction as major. Amitriptyline and Primidone 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. Primidone is metabolized to phenobarbital, which induces hepatic enzymes and may reduce amitriptyline levels. Additive sedation is also likely, and tricyclics may lower the seizure threshold.

How serious is the interaction between Amitriptyline and Primidone?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for loss of antidepressant effect, sedation, and seizure control, and adjust amitriptyline dose by response or levels. Reassess dosing if primidone is stopped.

What other medicines interact with Amitriptyline?

MediHelp also lists interactions of Amitriptyline with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Amitriptyline 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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