methods using estrogen / progestin / antiprogestin and device for oral contraception and for regulation of menstruation

摘要

FIELD: medicine, gynecology. SUBSTANCE: invention relates to menstruation regulation when pregnancy prevention is desirable that can be achieved at low doses of estrogen and progestin. The latters can make episodes of sudden bleeding and/or amenorrhea caused by drug withdrawal by periodic induction of menstruation with antiprogestin. EFFECT: enhanced effectiveness of method.