Adderall is a prescription medication that contains two stimulant drugs: amphetamine and dextroamphetamine. It is commonly 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. This helps improve attention, focus, and impulse control in individuals with ADHD. Adderall is available in immediate-release (IR) and extended-release (XR) formulations.