Mydayis (Generic Name: Mixed salts of a single-entity amphetamine product) is an ADHD medication with a long-acting, triple-bead, mixed amphetamine salts formulation used for once-daily treatment of attention deficit disorder (ADHD or ADD) in adolescents and adults 13 and older. According to the FDA, Mydayis is a federally controlled substance (CII) because it can be abused or lead to dependence. It is an amphetamine.