Adderall and Mydayis[10] are trade names for a combination drug termed mixed amphetamine salts ("MAS" solutions) made up of 4 salts of amphetamine. The mixture is composed of equal elements racemic amphetamine and dextroamphetamine, which makes a (three:one) ratio (by weight) among dextroamphetamine and levoamphetamine, the two enantiomers of amphe