Drug interactions
Dronedarone + Nirmatrelvir
Severity: Contraindicated
Dronedarone and Nirmatrelvir: 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
Nirmatrelvir is a CYP3A4 inhibitor and is given with ritonavir, which further boosts inhibition. Dronedarone levels can rise substantially, increasing the risk of proarrhythmia and QT prolongation.
What this interaction means in plain words
Dronedarone and Nirmatrelvir 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; Nirmatrelvir belongs to Anti Virals.
Why it happens
Inhibition of CYP3A4 reduces dronedarone clearance.
What to do
Avoid the combination; consider withholding dronedarone during antiviral treatment only under specialist guidance, or use an alternative COVID-19 therapy.
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 Nirmatrelvir
- Alfuzosin + Nirmatrelvir Contraindicated
- Amiodarone + Nirmatrelvir Contraindicated
- Apalutamide + Nirmatrelvir Contraindicated
- Carbamazepine + Nirmatrelvir Contraindicated
- Colchicine + Nirmatrelvir Contraindicated
- Enzalutamide + Nirmatrelvir Contraindicated
Frequently asked questions
Can I take Dronedarone with Nirmatrelvir?
MediHelp rates the interaction as contraindicated. Dronedarone and Nirmatrelvir 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. Nirmatrelvir is a CYP3A4 inhibitor and is given with ritonavir, which further boosts inhibition. Dronedarone levels can rise substantially, increasing the risk of proarrhythmia and QT prolongation.
How serious is the interaction between Dronedarone and Nirmatrelvir?
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 withholding dronedarone during antiviral treatment only under specialist guidance, or use an alternative COVID-19 therapy.
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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