<unk>  is approved for and used in the treatment of endometriosis. It is described as similar in action and effect to danazol, which is also used in the treatment of endometriosis, but is reported to have fewer androgenic side effects in comparison.<unk>  has also been used to shrink uterine fibroids and to reduce menorrhagia. Due to its antigonadotropic effects and ability to inhibit ovulation,<unk>  has been studied as a method of hormonal birth control in women. Large studies across thousands of menstrual cycles have found it to be effective in preventing pregnancy. However, although effective, the pregnancy rate in the largest study conducted was 4.6 per 100 woman-years, which is too high of a failure rate for the medication to be recommended as a safe method of birth control. The medication has also been investigated as an emergency post-coital contraceptive.
Gestrinone
Gestodene
Mestanolone
Goserelin
Anastrozole
Oxandrolone
Allenestrol
Hexestrol