Adderall is a prescription medication that combines two stimulant drugs: amphetamine and dextroamphetamine. It is commonly used to treat attention deficit hyperactivity disorder (ADHD) and narcolepsy. As a central nervous system (CNS) stimulant, Adderall helps improve focus, attention, and impulse control in individuals with ADHD. It also helps manage excessive daytime sleepiness associated with narcolepsy.