Controlled Substances - are drugs that are regulated by state and federal laws that aim to control the danger of addiction, abuse, physical and mental harm, the trafficking by illegal means, and the dangers from actions of those who have used the substances. Such drugs may be declared illegal for sale or use, but may be dispensed under a physician's prescription.
Source: http://definitions.uslegal.com/c/controlled-substances/
Source: http://definitions.uslegal.com/c/controlled-substances/
