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adderall is a prescription stimulant medication used to treat attention deficit hyperactivity disorder and narcolepsy. it is a brand name medication that contains a combination of amphetamines and dextroamphetamine. both these active ingredients of adderall are the stimulants of the central nervous system. a person who takes adderall may have an increased ability to concentrate, focus, control behavior, and pay attention. adderall increases the work and activity of the brain chemicals dopamine and norepinephrine. according to the national institute on drug abuse (nida), the medication enhances activities of the brain chemicals (dopamine and norepinephrine) to produce its results. the medication primarily stimulates the sympathetic nervous system, triggering the “fight or flight” response of the body, producing pupil dilation, increased heart rate, blood pressure, and sweating. adderall is a popular medication available both as an immediate-release conventional tablet and an extende