Norepinephrine Bitartrate is a powerful vasopressor agent that is used to treat a wide variety of medical conditions. It is a synthetic form of the hormone norepinephrine that is produced naturally in the body. It works by stimulating the sympathetic nervous system, which causes the blood vessels to constrict. This increases blood pressure and allows more blood and oxygen to reach the vital organs. Norepinephrine Bitartrate is used to treat a variety of conditions including heart attack, stroke, anaphylactic shock, and sepsis.