Control Act) 1906-《纯净食品和药品法》(PureFoodand Drug Act) 1938-《联邦食品、药品和化妆品法案》(Federal Food, Drug, and Cosmetic Act) 1944-《公共保健服务法》(Public Health Service Act)
psychostimulants are devoid of the behavioral and neurochemical actions that define this class of drugsand instead act largely as cognitive enhancers (improving