• PGE1 • CYTOPROTECTIVE prostaglandin in preventing PEPTIC ULCER • Used to protect the mucosal lining of the stomach during chronic NSAID treatment by interacting with PG receptors on parietal cells within the stomach, reducing gastric acid secretion; stimulates mucus and bicarbonate production COMBINED WITH MIFEPRISTONE FOR TERMINATING EARLY PREGNANCY Off-label use: LABOR INDUCTION (increase uterine contraction by interacting with prostaglandin receptors in the uterus)