Adderall is a psychostimulant medication that contains amphetamine, used for the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy. Adderall is a combination of four amphetamine salts. It is a dopamine releasing agent, a norepinephrine releasing agent, and can be mildly serotonergic. It is available in two formulations: IR (Instant Release) and XR (Extended Release).