Drug interactions
Dronedarone + Levoketoconazole
Severity: Contraindicated
Dronedarone and Levoketoconazole: contraindicated interaction.
Last updated Sources: US FDA label
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
Levoketoconazole is a strong CYP3A4 inhibitor that can markedly increase dronedarone exposure, and both drugs prolong QT. This carries a high risk of torsades de pointes.
What this interaction means in plain words
Dronedarone and Levoketoconazole 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.
Dronedarone belongs to Cardiovascular; Levoketoconazole belongs to Endocrine.
Why it happens
Strong CYP3A4 inhibition plus additive QT prolongation.
What to do
Do not coadminister; use alternatives.
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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References
Other interactions of Dronedarone
- Adagrasib + Dronedarone Contraindicated
- Amiodarone + Dronedarone Contraindicated
- Arsenic trioxide + Dronedarone Contraindicated
- Artemether / lumefantrine + Dronedarone Contraindicated
- Atazanavir + Dronedarone Contraindicated
- Azithromycin + Dronedarone Contraindicated
Other interactions of Levoketoconazole
- Alfuzosin + Levoketoconazole Contraindicated
- Alprazolam + Levoketoconazole Contraindicated
- Amiodarone + Levoketoconazole Contraindicated
- Avanafil + Levoketoconazole Contraindicated
- Cisapride + Levoketoconazole Contraindicated
- Clarithromycin + Levoketoconazole Contraindicated
Frequently asked questions
Can I take Dronedarone with Levoketoconazole?
MediHelp rates the interaction as contraindicated. Dronedarone and Levoketoconazole 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. Levoketoconazole is a strong CYP3A4 inhibitor that can markedly increase dronedarone exposure, and both drugs prolong QT. This carries a high risk of torsades de pointes.
How serious is the interaction between Dronedarone and Levoketoconazole?
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 coadminister; use alternatives.
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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