Adderall is a prescription medication primarily used to treat attention deficit hyperactivity disorder (ADHD) and narcolepsy. It contains a combination of amphetamine and dextroamphetamine, which are stimulants that affect chemicals in the brain and nerves that contribute to impulse control and hyperactivity. Adderall helps increase attention span, decrease impulsiveness, and improve focus in individuals with ADHD. It can also be prescribed for the treatment of narcolepsy, a sleep disorder characterized by excessive daytime sleepiness and sudden attacks of sleep.