Tamsulosin and Verapamil: Drug Interaction Guide

Quick answer: This combination requires caution. Tamsulosin and Verapamil can be used together with adjustments and monitoring.

Interaction severity: Moderate — caution required

How Tamsulosin interacts with Verapamil

Verapamil inhibits CYP3A4, increasing tamsulosin exposure, and both drugs have additive vasodilatory and hypotensive effects.

What you should do

Monitor blood pressure, particularly during dose initiation or titration; warn patient about orthostatic hypotension and first-dose effect.

Key facts

Severity

Moderate — caution required

Mechanism

Verapamil inhibits CYP3A4, increasing tamsulosin exposure, and both drugs have additive vasodilatory and hypotensive eff...

Action

Monitor blood pressure, particularly during dose initiation or titration; warn patient about orthostatic hypotension and...

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 Tamsulosin and Verapamil together?

With caution. Monitor blood pressure, particularly during dose initiation or titration; warn patient about orthostatic hypotension and first-dose effect.

What is the severity of this interaction?

The interaction between Tamsulosin and Verapamil is classified as Moderate — caution required. Verapamil inhibits CYP3A4, increasing tamsulosin exposure, and both drugs have additive vasodilatory and hypotensive effects.

What should I do if I'm prescribed both?

Monitor blood pressure, particularly during dose initiation or titration; warn patient about orthostatic hypotension and first-dose effect. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

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