Mifeprex is a brand version of Mifepristone. It is also recognized as Generic RU486. It is a synthetic steroid and is mostly instructed for termination of early phase pregnancy i.e within 63 days of gestation. This medicine is essentially taken in combination with Misoprostol. An aggregate of both the medicine altogether shows 98% effective results in the termination of intrauterine pregnancy. So if you are in your early-stage gestation (i.e. 9 weeks or less) then you can opt for medical abortion.