An open label, balanced, randomized, two-treatment, two-period, two-sequence, single-dose, crossover, bioequivalence study comparing Dextroamphetamine Saccharate, Amphetamine Aspartate, Dextroamphetamine Sulfate and Amphetamine Sulfate Tablets (Mixed Salts of Single Entity Amphetamine Product) 30 mg, manufactured by Frontida Biopharm. Inc., Philadelphia, USA with Attent 30 mg (Mixed Amphetamine Salts tablets) manufactured by Teva Israel Ltd., in healthy adult, human subjects under fasting condition.