Prega Exit Kit is a combination of mifepristone (200 mg) and misoprostol (800 mcg) used for medical termination of pregnancy (MTP) up to 9 weeks. Mifepristone works by blocking the hormone progesterone, which is essential for maintaining pregnancy, while misoprostol induces uterine contractions to expel the pregnancy. It is crucial to undergo medical supervision throughout the process to monitor and manage potential side effects, including bleeding, cramping, and nausea.