Adderall comes in a regular-release type that lasts four to six hrs and an extended-release sort (Adderall XR) that works for approximately 12 several hours. Model-title Adderall XR and generic Adderall and Adderall XR can be found as amphetamine/dextroamphetamine and prolonged-release amphetamine/dextroamphetamine. The best strategy to learn ab