narcolepsy. Adderall contains a combination of amphetamine and dextroamphetamine. Amphetamine and dextroamphetamine are central nervous system stimulants that affect chemicals in the brain and nerves that contribute to hyperactivity and impulse control. Amphetamine and dextroamphetamine combination works in the treatment of ADHD to increase attention and decrease restlessness in patients who are overactive, cannot concentrate, or are easily