Crossword clues for Controlled substance 4 letters:PCBSSubj. of the Toxic Substances Control Act of 1976DRUGControlled substancePCB1976 Toxic Substances Control Act substanceCLASSCLike the least dangerous controlled substances, in U.K. lawPLACEBOMedical test control substanceDEAEnforcer of the Controlled Substances Act (abbr.)DEAControlled Substances Act org.PLACEBOControl substanceILLEGALDRUGCommonly controlled substanceDEAFed. overseer of the Controlled Substances ActEPAOrg. that enforces the Toxic Substances Control ActEPAOrg. charged with enforcing the Toxic Substances Control ActDEAControlled substance org.DEASubstance control org.DEAPENALTYFine for violating the Controlled Substances Act?OPIATEControlled substanceLSDSubstance associated with the C.I.A.'s controversial MK-ULTRA mind-control program