Drug interactions
Dronedarone + Trifluoperazine
Severity: Major
Dronedarone and Trifluoperazine: 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
Both agents can prolong the QT interval, increasing the risk of torsades de pointes and ventricular arrhythmia. Dronedarone is not recommended with other QT-prolonging drugs such as phenothiazines.
What this interaction means in plain words
Dronedarone and Trifluoperazine 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
Additive prolongation of cardiac repolarization (QTc).
What to do
Avoid the combination and use an antipsychotic with lower QT risk. If unavoidable, monitor ECG and keep potassium and magnesium normal.
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 Trifluoperazine?
MediHelp rates the interaction as major. Dronedarone and Trifluoperazine 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. Both agents can prolong the QT interval, increasing the risk of torsades de pointes and ventricular arrhythmia. Dronedarone is not recommended with other QT-prolonging drugs such as phenothiazines.
How serious is the interaction between Dronedarone and Trifluoperazine?
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 the combination and use an antipsychotic with lower QT risk. If unavoidable, monitor ECG and keep potassium and magnesium normal.
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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