Adderall and Mydayis[ten] are trade names for a mixture drug called mixed amphetamine salts ("MAS" solutions) containing four salts of amphetamine. The mixture is composed of equivalent areas racemic amphetamine and dextroamphetamine, which provides a (3:1) ratio (by excess weight) amongst dextroamphetamine and levoamphetamine, The 2 enantiomers of