methamphetamine

n. The most potent drug in the amphetamine family, which acts as a strong central nervous system stimulant, mimicking the effects of norepinephrine and dopamine. Methamphetamine raises heart rate and blood pressure, suppresses immune function and sleep, increases blood flow to skeletal muscles and away from the digestive tract and teeth, suppresses appetite, and produces 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 alert and for experiencing the euphoria high doses create. Methamphetamine is addicting in the traditional sense of produc- is due to an insufficiency of norepinephrine and dopamine in the brain, which results in depression, fatigue, and lack of motivation.