amphetamine

n. A family of drugs including Benzedrine, Dexedrine, and Methedrine which act as nervous system stimulants effects of norepinephrine Amphetamines raise heart pressure, suppress immune function and sleep, increase blood flow to skeletal muscles and away from the digestive tract and teeth, suppress appetite, and produce feelings of energy and well-being and, in high doses, euphoria. Prolonged use can result in anxiety, panic, acute paranoia, dental problems, and malnutrition. Amphetamines are widely and illegally used for staying awake and for the euphoria of high doses. Amphetamines are addicting in the traditional sense of producing tolerance and withdrawal. The withdrawal is due to an insufficiency of norepinephrine and dopamine in the brain, which results in a sense of depression, fatigue, and lack of motivation.