Generic RU 486 is a primary abortion pill. You take it on day 1 of the medical pregnancy termination procedure. The strength of this anti-progesterone medicine is 200mg. The medicine is available as Mifepristone and Mifeprex. So, you can choose any of these three medications. And then use it to start ending your early pregnancy at home. You can self-administer the pill orally with water. And, the pill will only work for a pregnancy up to 9 weeks of gestation.