Active Ingredient

Dutasteride

Dutasteride is a medication that belongs to the class of drugs known as 5-alpha reductase inhibitors. It is primarily used to manage conditions related to the prostate.

This medication is often prescribed for men experiencing symptoms of an enlarged prostate, a common condition as men age.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Available Dutasteride Brands

Veltride

Strengths 0.5 mg

Avodart

Strengths 0.5mg

Dutas

Strengths 0.5mg

Dutanol

Strengths 0.5mg

Dutasteride Uses

Dutasteride is commonly used to treat conditions associated with prostate enlargement.

Benign prostatic hyperplasia (BPH)
Improving urinary flow
Reducing the risk of urinary retention
Decreasing the need for prostate surgery

How Dutasteride Works

Dutasteride works by blocking the action of an enzyme called 5-alpha reductase. This enzyme is responsible for converting testosterone into dihydrotestosterone (DHT).

By reducing the levels of DHT, Dutasteride helps to shrink the enlarged prostate and relieve symptoms.

This can lead to improved urine flow and a reduction in the risk of needing surgery.

Common side effects of Dutasteride

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

Decreased libido
Impotence
Breast tenderness or enlargement
Dizziness
Allergic reactions

If you experience serious or persistent symptoms, it is important to contact your doctor.

Frequently Asked Questions

What is Dutasteride used for?

Dutasteride is used to treat symptoms of an enlarged prostate, also known as benign prostatic hyperplasia (BPH).

How quickly does Dutasteride work?

The effects of Dutasteride may be noticed within a few weeks, but it can take up to six months to see the full benefits.

Is Dutasteride safe for long-term use?

Dutasteride is generally considered safe for long-term use, but regular medical check-ups are recommended to monitor its effects.

Can Dutasteride affect sexual function?

Some patients may experience changes in sexual function, such as decreased libido or impotence, while taking Dutasteride.

Can women use Dutasteride?

Dutasteride is not typically prescribed for women and can be harmful if used during pregnancy. Women should avoid handling the medication, especially if pregnant.