Regulations last checked for updates: Jan 18, 2025

Title 21 - Food and Drugs last revised: Dec 26, 2025

GENERAL INFORMATION
CONTROLLED SUBSTANCES LISTED IN SCHEDULE II
CONTROLLED SUBSTANCES LISTED IN SCHEDULES III, IV, AND V
authority: 21 U.S.C. 821,823,829,829a,831,871
source: 36 FR 7799, Apr. 24, 1971; 36 FR 13386, July 21, 1971, unless otherwise noted. Redesignated at 38 FR 26609, Sept. 24, 1973.