respond to classmate and ask question The Controlled Substances Act (CSA) was established in 1970 as a federal legislation aimed at regulating several substances with regard to their manufacture, importation, possession, use, and distribution. According to Gabay (2013), the main purpose of implementation of the Controlled Substances Act is to address drug abuse and addiction by classifying these substances into five schedules according to their potential for abuse, medical use, and safety or dependence liability. Schedule I substances have a high potential for abuse, no currently accepted medical use in treatment in the United States, and a lack of accepted safety for use under medical supervision. Examples include heroin, marijuana, ecstasy, gamma hydroxybutyric acid (GHB) (Gabay, 2013). Schedule II substances have a high potential for abuse, a currently accepted medical use, and a high potential for severe psychological or physical dependence. A few examples include morphine, codeine, hydrocodone, hydromorphone, and methadone (Gabay, 2013). Schedule III substances have a moderate to low potential for physical and psychological dependence and abuse, and a currently accepted medical use in treatment in the United States. Examples include certain doses of hydrocodone/acetaminophen, codeine in combination with acetaminophen, aspirin, or ibuprofen; anabolic steroids; and ketamine (Gabay, 2013). Schedule IV substances have a low potential for abuse and dependence relative to sub