Active Ingredient

Cyproterone

Cyproterone is a medication that belongs to a class of drugs known as anti-androgens. It is used to manage conditions related to hormone imbalances.

It works by blocking the effects of male hormones in the body. This can be helpful in treating certain medical conditions in both men and women.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Cyproterone Uses

Cyproterone is typically used to treat various conditions associated with hormone imbalances.

Management of prostate cancer
Treatment of severe acne in women
Control of excessive hair growth (hirsutism) in women
Reduction of sex drive in men with sexual deviations

How Cyproterone Works

Cyproterone works by blocking androgen receptors, which prevents male hormones from exerting their effects on the body. This action helps in reducing the growth of certain hormone-dependent tissues.

By decreasing the influence of male hormones, it can help manage conditions like prostate cancer and excessive hair growth.

In women, it can also reduce the production of sebum, which is beneficial in treating acne.

Common side effects of Cyproterone

Not everyone experiences side effects, and many side effects are mild and temporary. However, some people may experience certain common side effects.

Fatigue
Weight changes
Decreased libido
Hot flashes
Mood changes
Breast tenderness

Contact a doctor if you experience any serious or persistent symptoms.

Monitor your symptoms and report any significant changes to your doctor.
Avoid consuming large amounts of alcohol while taking this medication.
Inform your healthcare provider about any other medications you are taking to avoid interactions.
Do not use Cyproterone if you have a history of liver disease unless advised by your doctor.
Seek immediate medical attention if you experience symptoms like severe abdominal pain or jaundice.

Always consult your doctor for personalized medical advice.

Frequently Asked Questions

How does Cyproterone affect hormone levels?

Cyproterone blocks the effects of male hormones, reducing their impact on the body.

How long does it take for Cyproterone to show effects?

The time it takes to notice effects can vary. Discuss with your doctor for more information specific to your condition.

Is Cyproterone safe for long-term use?

Your doctor will assess the risks and benefits of long-term use based on your individual health needs.

Can Cyproterone interact with other medications?

Yes, Cyproterone can interact with other medications. Inform your doctor about all medications you are taking.

Can I stop taking Cyproterone if I feel better?

Do not stop taking Cyproterone without consulting your doctor, even if you feel better.