Buy Adderall 7.5MG (dextroamphetamine) is a prescription drug used to treat attention deficit hyperactivity disorder (ADHD). It is available in pill form as well as an extended-release form (Adderall XR), which is designed to last for up to 12 hours. What are the several features of Adderall 7.5 MG? Adderall XR is formulated to release more medication over a more extended period, providing increased discretion and control for those who need it.