Adderall is a prescription medication that contains a combination of amphetamine and dextroamphetamine. It is primarily used to treat Attention Deficit Hyperactivity Disorder (ADHD) and narcolepsy. Adderall works by increasing the levels of certain neurotransmitters in the brain, such as dopamine and norepinephrine, which help improve focus, attention, and impulse control. There are two main formulations: Adderall IR (immediate release) and Adderall XR (extended release).