Used primarily in hormonal contraceptives, this compound prevents ovulation and alters the cervical mucus and endometrium to reduce the likelihood of fertilization and implantation. It is commonly found in combined oral contraceptive pills and some progestin-only formulations. Due to its high selectivity for progesterone receptors, it provides effective birth control with minimal androgenic side effects. It may also be used to manage menstrual disorders such as heavy or irregular bleeding.