Adderall is available in an ordinary-release variety that lasts 4 to 6 several hours and an prolonged-release variety (Adderall XR) that actually works for approximately twelve several hours. Model-title Adderall XR and generic Adderall and Adderall XR can be found as amphetamine/dextroamphetamine and prolonged-launch amphetamine/dextroamphetamine.