How does it work?

Cyproterone acetate is a derivative of the natural hormone progesterone and is a type of medicine known as an anti-androgen. Androgens are male hormones such as testosterone. Testosterone is produced by the testicles and is the main hormone essential for normal growth and development of the male sex organs and male sexual characteristics. During adult life, testosterone is essential for the production of sperm, the maintenance of sex drive, erectile potency, and the functioning of the prostate gland and other reproductive structures. Cyproterone acts on an area of the brain called the hypothalamus and causes a reduction in the amount of testosterone produced by the body. It also prevents testosterone from binding to androgen receptors in other areas of the body. The result of this is a decrease in the amount of testosterone circulating in the body, which can help control sexual desire. Cyproterone is used in men with severe hypersexuality and or sexual perversion; that is, favouring sexual practices which are biologically or medically abnormal. In higher doses, cyproterone is used to treat prostate cancer (see Cyprostat).

What is it used for?

Control of deviant antisocial sexual behaviour

Warning!

This medicine may reduce your ability to drive or operate machinery safely. Do not drive or operate machinery until you know how this medicine affects you and you are sure it won't affect your performance.

It is recommended that people taking this medicine have regular blood tests to monitor their liver function.

It is recommended that regular blood tests are performed to check levels of the blood components.

The functioning of the adrenal glands should be monitored regularly while taking this medicine.

This medicine is of no use in chronic alcoholism.

Use with caution in

Diabetes mellitus

Not to be used in

Anaemia caused by a hereditary blood disorder where abnormal haemoglobin is produced (sickle cell anaemia)

Blood clot in the blood vessels (thromboembolism) or a history of this

Children or adolescents under 18 years of age

Chronic depression

Incomplete maturation of the bones or testicles

Liver disease

Malignant or cancerous disease (except prostate cancer)

Severe diabetes associated with circulatory problems

Wasting diseases

This medicine should not be used if you are allergic to one or any of its ingredients. Please inform your doctor or pharmacist if you have previously experienced such an allergy. If you feel you have experienced an allergic reaction, stop using this medicine and inform your doctor or pharmacist immediately.

Pregnancy and Breastfeeding

Certain medicines should not be used during pregnancy or breastfeeding. However, other medicines may be safely used in pregnancy or breastfeeding providing the benefits to the mother outweigh the risks to the unborn baby. Always inform your doctor if you are pregnant or planning a pregnancy, before using any medicine.

This medicine is for use by men only. It should not be taken by pregnant or breastfeeding women.

Label warnings

Take this medication with or after food.

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