Definition: (pross-tah-GLAN-din) A potent hormone-like substance that can control blood pressure, muscle contractions, and inflammation. Letters (and numbers) are added to designate the type, e.g., prostaglandin E-1 is a relaxant (vasodilator) also known as alprostadil that is used to produce erections.
Originally marketed as Caverject. May be combined into a bi-mix or trimix. See also MUSE.