d-form of amphetamine; it is a central nervous system stimulant and a sympathomimetic; it has also been used in the treatment of narcolepsy and of attention deficit disorders and hyperactivity in children; dextroamphetamine has multiple mechanisms of action including blocking uptake of adrenergics and dopamine, stimulating release of monamines, and inhibiting monoamine oxidase; it is also a drug of abuse and a psychotomimetic.