Misoprostol is a medication that belongs to a class of drugs known as prostaglandin analogs. It is primarily used to prevent stomach ulcers in people taking nonsteroidal anti-inflammatory drugs (NSAIDs) and to induce labor in pregnant women. Misoprostol works by reducing stomach acid production and increasing the production of protective mucus in the stomach lining. In addition to its use for ulcers and labor induction, Misoprostol is also used in medical abortions and to treat miscarriage. It can help the uterus contract and expel its contents. The medication is typically administered orally or vaginally, depending on the intended use.