Adderall and Mydayis[ten] are trade names for a mix drug named blended amphetamine salts ("MAS" items) made up of 4 salts of amphetamine. The mixture is composed of equal areas racemic amphetamine and dextroamphetamine, which makes a (three:one) ratio (by weight) in between dextroamphetamine and levoamphetamine, the two enantiomers of amphetamine.