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Interações medicamentosas

Arsenic trioxide + Capecitabine

Gravidade: Grave

Arsenic trioxide and Capecitabine: major interaction.

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Resumo

Arsenic trioxide markedly prolongs the QT interval and can cause torsades de pointes. Fluorouracil-class drugs have rare reports of cardiotoxicity, so the combination adds uncertain additional risk on top of a high baseline risk.

O que esta interação significa em palavras simples

Arsenic trioxide and Capecitabine 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.

Arsenic trioxide belongs to Oncology; Capecitabine belongs to Oncology.

Nível de evidência: Low

Por que acontece

Arsenic trioxide blocks cardiac repolarization currents; capecitabine contribution to QT effect is weak and not well established.

O que fazer

Check baseline ECG and keep potassium and magnesium within normal range. Monitor ECG during treatment and avoid other QT-prolonging drugs.

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 Arsenic trioxide with Capecitabine?

MediHelp rates the interaction as major. Arsenic trioxide and Capecitabine 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. Arsenic trioxide markedly prolongs the QT interval and can cause torsades de pointes. Fluorouracil-class drugs have rare reports of cardiotoxicity, so the combination adds uncertain additional risk on top of a high baseline risk.

How serious is the interaction between Arsenic trioxide and Capecitabine?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check baseline ECG and keep potassium and magnesium within normal range. Monitor ECG during treatment and avoid other QT-prolonging drugs.

What other medicines interact with Capecitabine?

MediHelp also lists interactions of Capecitabine with, for example, Adenovirus types 4 and 7 live, Axicabtagene ciloleucel, Brexucabtagene autoleucel. The full list is on the Capecitabine page.

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