Active Ingredient

Propranolol

Propranolol is a medication belonging to the beta-blocker class, commonly used to manage various cardiovascular conditions.

It helps in reducing the heart’s workload and is often used in situations where controlling heart rate and blood pressure is necessary.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Available Propranolol Brands

Strengths 160 mg

Strengths 40mg, 80mg

Inderal

Strengths 10mg, 20 mg, 40mg, 80mg

Strengths 40mg, 80mg

Ranol SR

Strengths 40mg, 80mg

Strengths 20 mg

Propranolol is used to treat a variety of conditions related to the heart and circulation.

Propranolol works by blocking beta-adrenergic receptors in the heart and blood vessels.

This action helps slow down the heart rate and reduces the force of heart muscle contraction, leading to lower blood pressure.

By reducing the heart’s workload, it aids in preventing symptoms like chest pain and irregular heartbeats.

Not everyone experiences side effects with propranolol, and many are mild and temporary.

If you experience any serious or persistent symptoms, contact your healthcare provider.

Monitor your blood pressure and heart rate regularly while taking propranolol.
Avoid consuming large amounts of alcohol as it can enhance side effects.
Inform your doctor about any other medications you are taking to avoid interactions.
Do not stop taking propranolol suddenly without consulting your doctor.
Be cautious if you have conditions like asthma or diabetes, as propranolol may affect these.

Always consult your healthcare provider for advice tailored to your condition.

What does propranolol do?

Propranolol helps to manage heart-related conditions by lowering heart rate and blood pressure.

How long does propranolol take to work?

The effects of propranolol can be noticed within a few hours, but it may take longer to see full benefits.

Can propranolol be used for anxiety?

Yes, propranolol is sometimes prescribed to help manage symptoms of anxiety, such as rapid heartbeat.

Are there any foods or drinks to avoid while taking propranolol?

It is advisable to limit alcohol intake and avoid excessive caffeine, as these can interfere with the medication’s effects.

Is it safe to take propranolol during pregnancy?

You should consult your doctor if you are pregnant or planning to become pregnant while taking propranolol.