<prompt> Most common side effect of mifepristone-FeverDiarrheaHeadacheRash  <response>: Ans-B i.e., Diarrhoea Mifepristone RU 486o It is a 19 nor steroid with potent anti progestational and significant antiglucocorticoid and antiandrogenactivity.o It is used in termination of pregnancy, cervical ripening, postcoital contraceptive, once a month contraceptive in induction of labour and to treat Cushings syndrome.o Commonly reported side effects include vaginal bleedingCrampingNausea,VomitingDiarrheaDizzinessBack painTiredness.o Less common but severe side effects include:Allergic reactionsLow blood pressureLoss of consciousness, infections after abortionRuptured ectopic pregnancyShortness of breathRapid heartbeat tachycardiaHematometra collection of blood in the uterus. 