Mostly used to treat narcolepsy and attention deficit hyperactivity disorder (ADHD), generic Adderall is a combination drug that contains amphetamine and dextroamphetamine. It comes in both brand-name and less expensive generic versions. Usually less expensive than the name-brand counterpart, the generic version is frequently covered by insurance and Medicare.Amphetamine and dextroamphetamine are combined in the generic Adderall drug, which is mostly used to treat narcolepsy and attention deficit hyperactivity disorder (ADHD). Both immediate-release and extended-release versions are available, and they are frequently less expensive than the name-brand equivalent. Many manufacturers create the generic version, which is usually thought to be just as effective as the name-brand equivalent.