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Interazioni tra farmaci

Erlotinib + Pantoprazole

Gravità: Maggiore

Erlotinib and Pantoprazole: major interaction.

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Sintesi

Erlotinib dissolves best at low gastric pH, and pantoprazole suppresses gastric acid so much that erlotinib absorption falls substantially (AUC reduction of about half with omeprazole). Tumour exposure may be inadequate.

Cosa significa questa interazione in parole semplici

Erlotinib and Pantoprazole 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.

Erlotinib belongs to Oncology; Pantoprazole belongs to Gastrointestinal Tract.

Livello di evidenza: High

Perché avviene

Raised gastric pH reduces erlotinib solubility and absorption

Cosa fare

Avoid PPIs; if acid suppression is needed, give erlotinib 2 hours before or 10 hours after an H2 antagonist, or use antacids separated by several hours.

Cosa chiedere al farmacista

  • 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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Domande frequenti

Can I take Erlotinib with Pantoprazole?

MediHelp rates the interaction as major. Erlotinib and Pantoprazole 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. Erlotinib dissolves best at low gastric pH, and pantoprazole suppresses gastric acid so much that erlotinib absorption falls substantially (AUC reduction of about half with omeprazole). Tumour exposure may be inadequate.

How serious is the interaction between Erlotinib and Pantoprazole?

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 PPIs; if acid suppression is needed, give erlotinib 2 hours before or 10 hours after an H2 antagonist, or use antacids separated by several hours.

What other medicines interact with Erlotinib?

MediHelp also lists interactions of Erlotinib with, for example, Amobarbital, Apalutamide, Carbamazepine. The full list is on the Erlotinib page.

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