Code of Federal Regulations, Title 22 Foreign Relations 1-2992023 - Paperbackby Office of the Federal Register (U S ) (Author) Title 21 presents regulations promulgated by the Food and Drug Administration, the Drug Enforcement Administration, and the Office of the National Drug Control Agency in the area of food and drugs. These regulations encompass food and drugs for human and animal use, biologics, cosmetics, medical devices, radiological health, and controlled substances. Additions and revisions to this section of the code