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Interactions médicamenteuses

Cimetidine + Neratinib

Gravité: Majeure

Cimetidine and Neratinib: major interaction.

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Résumé

Neratinib solubility falls as pH rises, and H2 antagonists reduce its absorption. This may reduce efficacy in breast cancer treatment.

Ce que signifie cette interaction, en termes simples

Cimetidine and Neratinib 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.

Cimetidine belongs to Gastrointestinal Tract; Neratinib belongs to Oncology.

Niveau de preuve: Moderate

Pourquoi elle survient

Cimetidine raises gastric pH, decreasing neratinib dissolution and absorption.

Conduite à tenir

Avoid H2 antagonists if possible; if needed, take neratinib at least 2 hours before the next H2 antagonist dose and at least 10 hours after the previous one.

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 Cimetidine with Neratinib?

MediHelp rates the interaction as major. Cimetidine and Neratinib 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. Neratinib solubility falls as pH rises, and H2 antagonists reduce its absorption. This may reduce efficacy in breast cancer treatment.

How serious is the interaction between Cimetidine and Neratinib?

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 H2 antagonists if possible; if needed, take neratinib at least 2 hours before the next H2 antagonist dose and at least 10 hours after the previous one.

What other medicines interact with Cimetidine?

MediHelp also lists interactions of Cimetidine with, for example, Dofetilide, Fezolinetant, Alfentanil. The full list is on the Cimetidine page.

Monographies complètes, posologies et vérificateur d'interactions dans l'application MediHelp

Ouvrez le référentiel complet, vérifiez les interactions entre plusieurs médicaments et utilisez les outils de posologie dans l'application MediHelp.

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