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Interactions médicamenteuses

Amitriptyline + Diphenoxylate-atropine

Gravité: Majeure

Amitriptyline and Diphenoxylate-atropine: major interaction.

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Résumé

Amitriptyline is strongly anticholinergic and sedating, and the atropine and diphenoxylate components add to this. The combination can cause constipation progressing to ileus, urinary retention, tachycardia, confusion and excess sedation.

Ce que signifie cette interaction, en termes simples

Amitriptyline and Diphenoxylate-atropine 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; Diphenoxylate-atropine belongs to Gastrointestinal Tract.

Niveau de preuve: Moderate

Pourquoi elle survient

Additive muscarinic blockade and additive CNS depression.

Conduite à tenir

Avoid combining where possible, especially in older patients or those with ileus or urinary retention; if used, monitor bowel and bladder function and mental status.

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 Diphenoxylate-atropine?

MediHelp rates the interaction as major. Amitriptyline and Diphenoxylate-atropine 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 is strongly anticholinergic and sedating, and the atropine and diphenoxylate components add to this. The combination can cause constipation progressing to ileus, urinary retention, tachycardia, confusion and excess sedation.

How serious is the interaction between Amitriptyline and Diphenoxylate-atropine?

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 combining where possible, especially in older patients or those with ileus or urinary retention; if used, monitor bowel and bladder function and mental status.

What other medicines interact with Diphenoxylate-atropine?

MediHelp also lists interactions of Diphenoxylate-atropine with, for example, Isocarboxazid, Phenelzine, Tranylcypromine. The full list is on the Diphenoxylate-atropine page.

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