From Longman Dictionary of Contemporary Englishcontrolled substanceconˌtrolled ˈsubstance noun [countable] law MDDa drug that is illegal to possess or use without permission from a doctor an arrest for the possession and sale of controlled substances
Examples from the Corpus
controlled substance• This prescription is for a controlled substance.• They were charged with possession of a controlled substance.• Anabolic steroids, a controlled substance in the United States since 1988, are not detectable by drug-sniffing canines.• Iverson was charged with misdemeanor possession of marijuana and possession of firearms with a controlled substance.• Lee was charged with felony sale of controlled substances and possession for sale of a controlled substance. 