Adderall is a combination of generic drugs amphetamine and dextroamphetamine. These drugs are central nervous system stimulants that affect chemicals in the brain and nerves that cause hyperactivity and impulse control. It is related to a class of drugs called stimulants. This drug is most commonly used to treat attention deficit hyperactivity disorder (ADHD). It also helps treat narcolepsy, a certain sleeping disorder. You can easily order Adderall online.