Dofetilide and Verapamil: Drug Interaction Guide

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

Interaction severity: Major — avoid combination

How Dofetilide interacts with Verapamil

Verapamil inhibits renal cation transport involved in dofetilide elimination, increasing dofetilide plasma concentrations. Higher exposure increases QT prolongation and torsades de pointes risk.

What you should do

Do not coadminister; select an alternative rate-control or antiarrhythmic strategy.

Key facts

Severity

Major — avoid combination

Mechanism

Verapamil inhibits renal cation transport involved in dofetilide elimination, increasing dofetilide plasma concentration...

Action

Do not coadminister; select an alternative rate-control or antiarrhythmic strategy.

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 Dofetilide and Verapamil together?

No — this combination should generally be avoided. Do not coadminister; select an alternative rate-control or antiarrhythmic strategy.

What is the severity of this interaction?

The interaction between Dofetilide and Verapamil is classified as Major — avoid combination. Verapamil inhibits renal cation transport involved in dofetilide elimination, increasing dofetilide plasma concentrations. Higher exposure increases QT prolongation and torsades de pointes risk.

What should I do if I'm prescribed both?

Do not coadminister; select an alternative rate-control or antiarrhythmic strategy. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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