An abortifacient's a substance that induces abortion. Abortifacients for animals that've mated undesirably are known as mismating shots. Common abortifacients used in performing medical abortions include mifepristone, which's typically used in conjunction with misoprostol in a two-step approach. There're also several herbal mixtures with abortifacient claims, though there's no available data on the efficacy of these plants in humans. When used in oral form may be referred to as an abortion pill.… (More on Abortifacient)