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Interazioni tra farmaci

Conivaptan + Red yeast rice

Gravità: Maggiore

Conivaptan and Red yeast rice: major interaction.

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Sintesi

Red yeast rice supplies monacolin K, identical to lovastatin, which relies on CYP3A4 for clearance. Conivaptan is a potent CYP3A4 inhibitor, so monacolin K levels may rise and increase the risk of myopathy.

Cosa significa questa interazione in parole semplici

Conivaptan and Red yeast rice 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.

Livello di evidenza: Moderate

Perché avviene

Conivaptan inhibits CYP3A4, decreasing monacolin K metabolism.

Cosa fare

Avoid the combination and withhold red yeast rice during conivaptan therapy. Monitor for muscle symptoms and creatine kinase if exposure occurs.

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 Conivaptan with Red yeast rice?

MediHelp rates the interaction as major. Conivaptan and Red yeast rice 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. Red yeast rice supplies monacolin K, identical to lovastatin, which relies on CYP3A4 for clearance. Conivaptan is a potent CYP3A4 inhibitor, so monacolin K levels may rise and increase the risk of myopathy.

How serious is the interaction between Conivaptan and Red yeast rice?

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 and withhold red yeast rice during conivaptan therapy. Monitor for muscle symptoms and creatine kinase if exposure occurs.

What other medicines interact with Red yeast rice?

MediHelp also lists interactions of Red yeast rice with, for example, Ritonavir, Saquinavir, Tipranavir. The full list is on the Red yeast rice page.

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