Drug interactions
Dronedarone + Pentobarbital
Severity: Major
Dronedarone and Pentobarbital: major 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
Pentobarbital induces CYP3A4 and can substantially lower dronedarone concentrations, risking loss of antiarrhythmic effect and reduced rate control.
What this interaction means in plain words
Dronedarone and Pentobarbital can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Barbiturate induction of CYP3A4 increases dronedarone metabolism.
What to do
Avoid combination, as strong CYP3A4 inducers are not recommended with dronedarone. Use an alternative sedative or antiarrhythmic.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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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
Frequently asked questions
Can I take Dronedarone with Pentobarbital?
MediHelp rates the interaction as major. Dronedarone and Pentobarbital can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Pentobarbital induces CYP3A4 and can substantially lower dronedarone concentrations, risking loss of antiarrhythmic effect and reduced rate control.
How serious is the interaction between Dronedarone and Pentobarbital?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid combination, as strong CYP3A4 inducers are not recommended with dronedarone. Use an alternative sedative or antiarrhythmic.
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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