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Interactions médicamenteuses

Gefitinib + Rabeprazole

Gravité: Majeure

Gefitinib and Rabeprazole: major interaction.

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Résumé

Rabeprazole raises gastric pH, and gefitinib solubility falls sharply at higher pH. Gefitinib exposure can drop substantially, which may reduce antitumor efficacy.

Ce que signifie cette interaction, en termes simples

Gefitinib and Rabeprazole 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.

Gefitinib belongs to Oncology; Rabeprazole belongs to Gastrointestinal Tract.

Niveau de preuve: High

Pourquoi elle survient

Higher gastric pH reduces gefitinib solubility and absorption.

Conduite à tenir

Avoid the PPI if possible and use short-acting antacids or H2 blockers with dosing separated from gefitinib as per labeling. If a PPI is essential, take gefitinib 12 hours after the PPI dose and monitor tumor response.

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 Gefitinib with Rabeprazole?

MediHelp rates the interaction as major. Gefitinib and Rabeprazole 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. Rabeprazole raises gastric pH, and gefitinib solubility falls sharply at higher pH. Gefitinib exposure can drop substantially, which may reduce antitumor efficacy.

How serious is the interaction between Gefitinib and Rabeprazole?

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 the PPI if possible and use short-acting antacids or H2 blockers with dosing separated from gefitinib as per labeling. If a PPI is essential, take gefitinib 12 hours after the PPI dose and monitor tumor response.

What other medicines interact with Rabeprazole?

MediHelp also lists interactions of Rabeprazole with, for example, Rilpivirine, Acalabrutinib, Atazanavir. The full list is on the Rabeprazole 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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