Adderall comes in a standard-release kind that lasts 4 to 6 hrs and an extended-launch form (Adderall XR) that works for nearly 12 several hours. Brand-identify Adderall XR and generic Adderall and Adderall XR can be found as amphetamine/dextroamphetamine and extended-release amphetamine/dextroamphetamine. As soon as you get your prescription an