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Interações medicamentosas

Cobicistat + Erlotinib

Gravidade: Grave

Cobicistat and Erlotinib: major interaction.

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Resumo

Cobicistat is a strong CYP3A4 inhibitor and can substantially raise erlotinib levels. This increases the risk of rash, diarrhea and other toxicities, including interstitial lung disease.

O que esta interação significa em palavras simples

Cobicistat and Erlotinib 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.

Cobicistat belongs to Miscellaneous; Erlotinib belongs to Oncology.

Nível de evidência: Moderate

Por que acontece

Cobicistat inhibits CYP3A4, reducing erlotinib metabolism.

O que fazer

Avoid the combination where possible. If unavoidable, reduce the erlotinib dose in 50 mg steps and monitor for diarrhea, rash and respiratory symptoms.

O que perguntar ao farmacêutico

  • 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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Perguntas frequentes

Can I take Cobicistat with Erlotinib?

MediHelp rates the interaction as major. Cobicistat and Erlotinib 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. Cobicistat is a strong CYP3A4 inhibitor and can substantially raise erlotinib levels. This increases the risk of rash, diarrhea and other toxicities, including interstitial lung disease.

How serious is the interaction between Cobicistat and Erlotinib?

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 combination where possible. If unavoidable, reduce the erlotinib dose in 50 mg steps and monitor for diarrhea, rash and respiratory symptoms.

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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