Adderall and Mydayis[ten] are trade names for a mixture drug known as mixed amphetamine salts ("MAS" solutions) made up of four salts of amphetamine. The mixture is made up of equivalent parts racemic amphetamine and dextroamphetamine, which creates a (3:1) ratio (by excess weight) involving dextroamphetamine and levoamphetamine, the two enantiomer