Drug interactions
Escitalopram + Ibutilide
Severity: Major
Escitalopram and Ibutilide: major interaction.
Last updated Sources: UK SmPC
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 combining them raises the risk of torsades de pointes and other serious ventricular arrhythmias. Ibutilide already carries a substantial proarrhythmic risk, so any additional QT-prolonging agent adds to it.
What this interaction means in plain words
Escitalopram and Ibutilide 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.
Escitalopram belongs to Central Nervous System; Ibutilide belongs to Cardiovascular.
Why it happens
Additive prolongation of cardiac repolarization (QT interval) through pharmacodynamic synergy.
What to do
Avoid concurrent use where possible and choose a non-QT-prolonging alternative. If unavoidable, correct potassium and magnesium and monitor the ECG continuously.
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 Escitalopram
- Cisapride + Escitalopram Contraindicated
- Citalopram + Escitalopram Contraindicated
- Escitalopram + Isocarboxazid Contraindicated
- Escitalopram + Methylene blue Contraindicated
- Escitalopram + Phenelzine Contraindicated
- Escitalopram + Pimozide Contraindicated
Other interactions of Ibutilide
- Amiodarone + Ibutilide Contraindicated
- Amisulpride + Ibutilide Contraindicated
- Chlorpromazine + Ibutilide Contraindicated
- Clarithromycin + Ibutilide Contraindicated
- Desipramine + Ibutilide Contraindicated
- Dolasetron + Ibutilide Contraindicated
Frequently asked questions
Can I take Escitalopram with Ibutilide?
MediHelp rates the interaction as major. Escitalopram and Ibutilide 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 combining them raises the risk of torsades de pointes and other serious ventricular arrhythmias. Ibutilide already carries a substantial proarrhythmic risk, so any additional QT-prolonging agent adds to it.
How serious is the interaction between Escitalopram and Ibutilide?
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 concurrent use where possible and choose a non-QT-prolonging alternative. If unavoidable, correct potassium and magnesium and monitor the ECG continuously.
What other medicines interact with Escitalopram?
MediHelp also lists interactions of Escitalopram with, for example, Cisapride, Citalopram, Isocarboxazid. The full list is on the Escitalopram page.
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