Adderall is a prescribed medication that contains two drugs: amphetamine and dextroamphetamine salt. It is a part of medications called stimulants. It’s most commonly used to treat attention deficit hyperactivity disorder (ADHD). It’s also used to treat narcolepsy. It has two forms: Adderall oral tablet is an immediate-release (IR)* form of the drug. Adderall XR oral capsule is an extended-release (ER)* form of the drug.