Dextroamphetamine is an isomer of amphetamine and is better known by its trade name - Dexedrine. It is a central nervous system (CNS) stimulant & federally controlled Schedule II drug. Dexedrine was often used as a prescription diet aid as such stimulant drugs are known to suppress appetite. It is quite popular at college campuses for the stimulant high it provides and as a study aid. God only knows how beneficial it is for studies as it is known to work by suppressing all sorts of spontaneous behavior.