When a pregnancy is ended by taking two medications rather than ended by a surgical procedure. First, a woman is given Mifepristone (a pill) or Methotrexate (an injection). The first medication works by inhibiting her body’s ability to produce progesterone, a hormone that is necessary for sustaining a pregnancy. Three days later, another medication, Misoprostol, is given. This medication causes the muscles in a woman’s uterus to contract and have her period. Medical abortions are 95-percent effective.