RU-486 | Facts You Should Know About the Abortion Pill. The Abortion Pill Process in the US and many parts of the world consists of taking two medicatons. 1) RU 486 (Mifeprex, Mifepristone, Mifegyne, French Pill) and 2) Misoprostol (Cytotec). RU 486 blocks the hormone Progesterone that is important in maintaining growth of the pregnancy. Misoprostol causes the Uterus (womb)... Read More