Drug interactions
Conivaptan + Dronedarone
Severity: Contraindicated
Conivaptan and Dronedarone: contraindicated interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Conivaptan is a CYP3A4 inhibitor and may raise dronedarone concentrations. This increases the risk of proarrhythmia and QT prolongation.
What this interaction means in plain words
Conivaptan and Dronedarone 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.
Why it happens
Inhibition of CYP3A4 reduces dronedarone metabolism.
What to do
Avoid the combination; consider alternative treatment for hyponatremia such as fluid restriction or other agents.
What to ask your pharmacist
- 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?
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Other interactions of Dronedarone
- Adagrasib + Dronedarone Contraindicated
- Amiodarone + Dronedarone Contraindicated
- Arsenic trioxide + Dronedarone Contraindicated
- Artemether / lumefantrine + Dronedarone Contraindicated
- Atazanavir + Dronedarone Contraindicated
- Azithromycin + Dronedarone Contraindicated
Frequently asked questions
Can I take Conivaptan with Dronedarone?
MediHelp rates the interaction as contraindicated. Conivaptan and Dronedarone 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 inhibitor and may raise dronedarone concentrations. This increases the risk of proarrhythmia and QT prolongation.
How serious is the interaction between Conivaptan and Dronedarone?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination; consider alternative treatment for hyponatremia such as fluid restriction or other agents.
What other medicines interact with Dronedarone?
MediHelp also lists interactions of Dronedarone with, for example, Adagrasib, Amiodarone, Arsenic trioxide. The full list is on the Dronedarone page.
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