The Code of Federal Regulations is a codification of the general and permanent rules published in the Federal Register by the Executive departments and agencies of the United States Federal Government.

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 are posted annually by April. Publication follows within six months.

The Code of Federal Regulations is a codification of the general and permanent rules published in the Federal Register by the Executive departments and agencies of the United States Federal Government.