Adderall comes in a standard-launch variety that lasts four to six hrs and an extended-release variety (Adderall XR) that actually works for up to 12 hours. Brand-title Adderall XR and generic Adderall and Adderall XR can be found as amphetamine/dextroamphetamine and extended-release amphetamine/dextroamphetamine. Name your selection: Name have