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Drug interactions

Disopyramide + Escitalopram

Severity: Major

Disopyramide and Escitalopram: 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

Disopyramide is a class Ia antiarrhythmic with marked QT-prolonging and proarrhythmic effects, and escitalopram adds to this. The combination can precipitate torsades de pointes.

What this interaction means in plain words

Disopyramide and Escitalopram 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.

Disopyramide belongs to Cardiovascular; Escitalopram belongs to Central Nervous System.

Evidence level: Moderate

Why it happens

Additive prolongation of cardiac repolarization via potassium channel blockade.

What to do

Avoid the combination where possible and use an antidepressant with less QT effect such as sertraline; if it must be used, monitor ECG and electrolytes closely.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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References

Frequently asked questions

Can I take Disopyramide with Escitalopram?

MediHelp rates the interaction as major. Disopyramide and Escitalopram 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. Disopyramide is a class Ia antiarrhythmic with marked QT-prolonging and proarrhythmic effects, and escitalopram adds to this. The combination can precipitate torsades de pointes.

How serious is the interaction between Disopyramide and Escitalopram?

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 where possible and use an antidepressant with less QT effect such as sertraline; if it must be used, monitor ECG and electrolytes closely.

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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