<prompt> Most common side efiect of mifepristoneFeverHeadacheDiarrheaRash  <response>: Mifepristone RU 485 It is a 19 norsteroid with potent antiprogestational and significant antiglucocoicoid and antiandrogenic actitity.It is used in termination of pregnancy, cervical ripening postcoital contraceptive, once a month contraceptive, in induction of labour and to treat cushings syndrome.Commonly repoed side afects include vaginal bleeding, cramping, nausea, vomiting, diarrhea, dizziness, back pain tenderness. 