Drug interactions
Cobicistat + Dronedarone
Severity: Contraindicated
Cobicistat 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
Cobicistat strongly inhibits CYP3A4 and can greatly increase dronedarone exposure. This raises the risk of QT prolongation, bradycardia and torsades de pointes.
What this interaction means in plain words
Cobicistat 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.
Cobicistat belongs to Miscellaneous; Dronedarone belongs to Cardiovascular.
Why it happens
Cobicistat inhibits CYP3A4 metabolism of dronedarone.
What to do
Do not coadminister; select an alternative antiarrhythmic or an unboosted antiretroviral regimen.
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
Other interactions of Cobicistat
- Alfuzosin + Cobicistat Contraindicated
- Apalutamide + Cobicistat Contraindicated
- Cobicistat + Colchicine Contraindicated
- Cobicistat + Eletriptan Contraindicated
- Cobicistat + Eplerenone Contraindicated
- Cobicistat + Ergotamine Contraindicated
Frequently asked questions
Can I take Cobicistat with Dronedarone?
MediHelp rates the interaction as contraindicated. Cobicistat 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. Cobicistat strongly inhibits CYP3A4 and can greatly increase dronedarone exposure. This raises the risk of QT prolongation, bradycardia and torsades de pointes.
How serious is the interaction between Cobicistat 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: Do not coadminister; select an alternative antiarrhythmic or an unboosted antiretroviral regimen.
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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