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Interações medicamentosas

Atazanavir + Vincristine

Gravidade: Grave

Atazanavir and Vincristine: major interaction.

Última atualização Fontes: US FDA label

Para profissionais de saúde — apenas referência. Esta página é um resumo breve, não é aconselhamento médico nem substitui a bula oficial ou o julgamento clínico. Verifique sempre antes de prescrever ou dispensar.

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Resumo

Atazanavir inhibits CYP3A4 and may increase vincristine exposure, raising the risk of neurotoxicity and constipation or ileus. Toxicity is a concern with ritonavir- or cobicistat-boosted regimens in particular.

O que esta interação significa em palavras simples

Atazanavir and Vincristine 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.

Atazanavir belongs to Anti Virals; Vincristine belongs to Oncology.

Nível de evidência: Moderate

Por que acontece

Atazanavir inhibits CYP3A4, reducing vincristine clearance.

O que fazer

Monitor for neuropathy, constipation and myelosuppression, and consider an alternative antiretroviral without CYP3A inhibition. Reduce the vincristine dose if toxicity develops.

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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Referências

Perguntas frequentes

Can I take Atazanavir with Vincristine?

MediHelp rates the interaction as major. Atazanavir and Vincristine 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. Atazanavir inhibits CYP3A4 and may increase vincristine exposure, raising the risk of neurotoxicity and constipation or ileus. Toxicity is a concern with ritonavir- or cobicistat-boosted regimens in particular.

How serious is the interaction between Atazanavir and Vincristine?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for neuropathy, constipation and myelosuppression, and consider an alternative antiretroviral without CYP3A inhibition. Reduce the vincristine dose if toxicity develops.

What other medicines interact with Vincristine?

MediHelp also lists interactions of Vincristine with, for example, Adenovirus types 4 and 7 live, Apalutamide, Ceritinib. The full list is on the Vincristine page.

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