Abortifacient

An abortifacient ("that which will cause a miscarriage" from Latin: abortus "miscarriage" and faciens "making") is a substance that induces abortion. Abortifacients for animals that have mated undesirably are known as mismating shots.

Common abortifacients used in performing medical abortions include mifepristone, which is typically used in conjunction with misoprostol in a two-step approach. There are also several herbal mixtures with abortifacient claims, though there are no available data on the efficacy of these plants in humans.