Sotalol and Thioridazine: Drug Interaction Guide

Quick answer: This is a major interaction — avoid combining Sotalol and Thioridazine unless specifically directed by your doctor.

Interaction severity: Major — avoid combination

How Sotalol interacts with Thioridazine

Both drugs prolong the QT interval through blockade of the IKr potassium channel; combined use markedly increases risk of torsades de pointes.

What you should do

Combination should be avoided. If clinically essential, perform baseline and follow-up ECG, correct electrolytes and consider continuous cardiac monitoring.

Key facts

Severity

Major — avoid combination

Mechanism

Both drugs prolong the QT interval through blockade of the IKr potassium channel; combined use markedly increases risk o...

Action

Combination should be avoided. If clinically essential, perform baseline and follow-up ECG, correct electrolytes and con...

Important medical disclaimer: This page provides educational information about drug interactions for general reference. It is not a substitute for professional medical advice, diagnosis, or treatment. Always discuss your specific medications with a qualified healthcare provider before starting, stopping, or changing any treatment. About our editorial team.

Frequently asked questions

Can I take Sotalol and Thioridazine together?

No — this combination should generally be avoided. Combination should be avoided. If clinically essential, perform baseline and follow-up ECG, correct electrolytes and consider continuous cardiac monitoring.

What is the severity of this interaction?

The interaction between Sotalol and Thioridazine is classified as Major — avoid combination. Both drugs prolong the QT interval through blockade of the IKr potassium channel; combined use markedly increases risk of torsades de pointes.

What should I do if I'm prescribed both?

Combination should be avoided. If clinically essential, perform baseline and follow-up ECG, correct electrolytes and consider continuous cardiac monitoring. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

Last reviewed: by iMedic Medical Editorial Team. Our editorial process.