Adderall and Mydayis[10] are trade names[note 2] for a combination drug containing four salts of amphetamine. The mixture is composed of equal parts racemic amphetamine and dextroamphetamine, which produces a (3:1) ratio between dextroamphetamine and levoamphetamine, the two enantiomers of amphetamine.[12] Both enantiomers are stimulants, but differ enough to give Adderall an effects profile disti