Mifepristone is a drug that blocks a hormone called progesterone that is needed for a pregnancy to continue. This results in the breakdown of the uterine lining and stopping the growth of the embryo. Mifepristone is used to cause an abortion during the early part of a pregnancy. Misoprostol is a synthetic prostaglandin medication used to prevent and treat stomach and duodenal ulcers, induce labor, cause an abortion, and treat postpartum bleeding due to poor contraction of the uterus. Misoprostol works by making the uterus to contract and opening of the cervix which helps the body push out the embryo through the vagina which leads to a similar level of cramping and bleeding as a miscarriage. Mifepristone with misoprostol, is used to end a pregnancy through ten weeks gestation (70 days or less since the first day of the last menstrual period).