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Interactions médicamenteuses

Bismuth subsalicylate + Dichlorphenamide

Gravité: Majeure

Bismuth subsalicylate and Dichlorphenamide: major interaction.

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Résumé

Bismuth subsalicylate is hydrolysed to salicylate, and dichlorphenamide is a carbonic anhydrase inhibitor; with salicylates it can accumulate salicylate and worsen metabolic acidosis. Tachypnoea, lethargy and coma have been reported with high-dose aspirin.

Ce que signifie cette interaction, en termes simples

Bismuth subsalicylate and Dichlorphenamide 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.

Bismuth subsalicylate belongs to Gastrointestinal Tract; Dichlorphenamide belongs to Miscellaneous.

Niveau de preuve: Moderate

Pourquoi elle survient

Carbonic anhydrase inhibition causes metabolic acidosis and reduced salicylate renal clearance, raising salicylate levels

Conduite à tenir

Avoid bismuth subsalicylate during dichlorphenamide therapy; if salicylate is needed use lowest dose and monitor acid-base status and symptoms of salicylism.

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 Bismuth subsalicylate with Dichlorphenamide?

MediHelp rates the interaction as major. Bismuth subsalicylate and Dichlorphenamide 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. Bismuth subsalicylate is hydrolysed to salicylate, and dichlorphenamide is a carbonic anhydrase inhibitor; with salicylates it can accumulate salicylate and worsen metabolic acidosis. Tachypnoea, lethargy and coma have been reported with high-dose aspirin.

How serious is the interaction between Bismuth subsalicylate and Dichlorphenamide?

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 bismuth subsalicylate during dichlorphenamide therapy; if salicylate is needed use lowest dose and monitor acid-base status and symptoms of salicylism.

What other medicines interact with Bismuth subsalicylate?

MediHelp also lists interactions of Bismuth subsalicylate with, for example, Warfarin, Acetylsalicylic acid, Amlodipine-benazepril. The full list is on the Bismuth subsalicylate page.

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