Adderall is a powerful medication used to treat Attention-deficit hyperactivity disorder (ADHD) and narcolepsy. It is a combination of four different salts of amphetamine. Adderall helps to increase focus and reduce hyperactivity and impulsiveness in people with ADHD. It helps to improve alertness and concentration in people with narcolepsy. Adderall is available as a tablet or an extended-release capsule. It is available in various strengths and forms, such as Adderall IR and Adderall XR.