An abortion is a medical procedure to end a pregnancy. Mifegymiso, also known as the ‘abortion pill’ is used for medical abortions. It is a combination of two drugs, mifepristone and misoprostol. The drugs change the lining of the uterus so a pregnancy can’t continue. A prescription is required for Mifegymiso, and can be prescribed and taken up to 9 weeks of pregnancy.