Drug interactions
Amiodarone + Quetiapine
Severity: Major
Amiodarone and Quetiapine: 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
Both drugs can prolong the QT interval, and combined use increases the risk of torsades de pointes. The risk is higher with hypokalemia, bradycardia or other QT-prolonging drugs.
What this interaction means in plain words
Amiodarone and Quetiapine 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; Quetiapine belongs to Central Nervous System.
Why it happens
Additive QT prolongation through delayed cardiac repolarization.
What to do
Obtain a baseline ECG, monitor the QTc and correct potassium and magnesium. Consider a less QT-prolonging antipsychotic if the QTc becomes markedly prolonged.
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 Quetiapine
- Adagrasib + Quetiapine Major
- Amisulpride + Quetiapine Major
- Amoxapine + Quetiapine Major
- Anagrelide + Quetiapine Major
- Apalutamide + Quetiapine Major
- Arsenic trioxide + Quetiapine Major
Frequently asked questions
Can I take Amiodarone with Quetiapine?
MediHelp rates the interaction as major. Amiodarone and Quetiapine 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 drugs can prolong the QT interval, and combined use increases the risk of torsades de pointes. The risk is higher with hypokalemia, bradycardia or other QT-prolonging drugs.
How serious is the interaction between Amiodarone and Quetiapine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG, monitor the QTc and correct potassium and magnesium. Consider a less QT-prolonging antipsychotic if the QTc becomes markedly prolonged.
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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