Cyproterone (Cyprostat) is a tablet that can be used to treat prostate cancer. It is a type of hormone therapy, and works by blocking the hormone testosterone, which prostate cancer cells need to grow.
Cyprostat may be used on its own to treat prostate cancer if other treatments, such as surgery, aren't suitable. It is also given before another type of hormonal-therapy, given as an injection.
Cyprostat may also be given to help reduce hot flushes in men who are having hormone therapy by injections, or who have had their testicles removed (orchidectomy) as part of their treatment.