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Interazioni tra farmaci

Conivaptan + Itraconazole

Gravità: Controindicata

Conivaptan and Itraconazole: contraindicated interaction.

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Sintesi

Conivaptan is a CYP3A4 substrate and itraconazole is a strong CYP3A4 inhibitor, so conivaptan exposure rises markedly. This may cause excessively rapid sodium correction with risk of osmotic demyelination.

Cosa significa questa interazione in parole semplici

Conivaptan and Itraconazole are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.

Livello di evidenza: High

Perché avviene

Strong CYP3A4 inhibition by itraconazole reduces conivaptan clearance.

Cosa fare

Do not combine. Use another hyponatremia treatment, and avoid conivaptan for about two weeks after stopping itraconazole.

Cosa chiedere al farmacista

  • Is there an alternative to one of these two medicines for me?
  • If both are essential, who is monitoring me and how often?
  • Which symptoms mean I should stop and seek help straight away?

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 Itraconazole?

MediHelp rates the interaction as contraindicated. Conivaptan and Itraconazole are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Conivaptan is a CYP3A4 substrate and itraconazole is a strong CYP3A4 inhibitor, so conivaptan exposure rises markedly. This may cause excessively rapid sodium correction with risk of osmotic demyelination.

How serious is the interaction between Conivaptan and Itraconazole?

MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not combine. Use another hyponatremia treatment, and avoid conivaptan for about two weeks after stopping itraconazole.

What other medicines interact with Itraconazole?

MediHelp also lists interactions of Itraconazole with, for example, Alfuzosin, Alprazolam, Avanafil. The full list is on the Itraconazole page.

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