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Title 21

Displaying title 21, up to date as of 7/15/2026. Title 21 was last amended 7/09/2026.
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Title 21Food and DrugsPart / Section
Chapter IFood and Drug Administration, Department of Health and Human Services1 – 1299
Subchapter EAnimal Drugs, Feeds, and Related Products500 – 599
Part 510New Animal Drugs510.3 – 510.600
Subpart AGeneral Provisions510.3 – 510.95
§ 510.3Definitions and interpretations.
§ 510.4Biologics; products subject to license control.
§ 510.7Consignees of new animal drugs for use in the manufacture of animal feed.
§ 510.95 [Reserved]
Subpart BSpecific Administrative Rulings and Decisions510.105 – 510.112
§ 510.105Labeling of drugs for use in milk-producing animals.
§ 510.106Labeling of antibiotic and antibiotic-containing drugs intended for use in milk-producing animals.
§ 510.110Antibiotics used in food-producing animals.
§ 510.112Antibiotics used in veterinary medicine and for nonmedical purposes; required data.
Subpart CImport Tolerances for Residues of Unapproved New Animal Drugs in Food510.201 – 510.213
Subpart DRecords and Reports510.301 – 510.305
§ 510.301Records and reports concerning experience with animal feeds bearing or containing new animal drugs for which an approved medicated feed mill license application is in effect.
§ 510.305Maintenance of copies of approved medicated feed mill licenses to manufacture animal feed bearing or containing new animal drugs.
Subpart ERequirements for Specific New Animal Drugs510.410 – 510.455
§ 510.410Corticosteroids for oral, injectable, and ophthalmic use in animals; warnings and labeling requirements.
§ 510.440Injectable iron preparations.
§ 510.455Requirements for free-choice medicated feeds.
Subpart F [Reserved]
Subpart GSponsors of Approved Applications510.600
§ 510.600Names, addresses, and drug labeler codes of sponsors of approved applications.