Drug interactions
Amiodarone + Rifapentine
Severity: Major
Amiodarone and Rifapentine: major 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
Rifapentine is an inducer of CYP3A4 and can substantially reduce amiodarone concentrations, risking recurrence of arrhythmia. The induction can persist for some time after rifapentine is stopped.
What this interaction means in plain words
Amiodarone and Rifapentine 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.
Amiodarone belongs to Cardiovascular; Rifapentine belongs to Anti Bacterial.
Why it happens
Induction of CYP3A4 by rifapentine increases amiodarone clearance.
What to do
Monitor ECG and arrhythmia control closely and consider measuring amiodarone levels with dose increases as needed. Reassess the dose after rifapentine is discontinued.
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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Other interactions of Amiodarone
- Amiodarone + Amisulpride Contraindicated
- Amiodarone + Arsenic trioxide Contraindicated
- Amiodarone + Dofetilide Contraindicated
- Amiodarone + Dronedarone Contraindicated
- Amiodarone + Droperidol Contraindicated
- Amiodarone + Eliglustat Contraindicated
Other interactions of Rifapentine
- Ledipasvir-sofosbuvir + Rifapentine Contraindicated
- Lorlatinib + Rifapentine Contraindicated
- Lurasidone + Rifapentine Contraindicated
- Ranolazine + Rifapentine Contraindicated
- Rifapentine + Sofosbuvir-velpatasvir Contraindicated
- Rifapentine + Sofosbuvir-velpatasvir-voxilaprevir Contraindicated
Frequently asked questions
Can I take Amiodarone with Rifapentine?
MediHelp rates the interaction as major. Amiodarone and Rifapentine 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. Rifapentine is an inducer of CYP3A4 and can substantially reduce amiodarone concentrations, risking recurrence of arrhythmia. The induction can persist for some time after rifapentine is stopped.
How serious is the interaction between Amiodarone and Rifapentine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor ECG and arrhythmia control closely and consider measuring amiodarone levels with dose increases as needed. Reassess the dose after rifapentine is discontinued.
What other medicines interact with Amiodarone?
MediHelp also lists interactions of Amiodarone with, for example, Amisulpride, Arsenic trioxide, Dofetilide. The full list is on the Amiodarone page.
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