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Title 21

Displaying title 21, up to date as of 7/17/2026. Title 21 was last amended 7/09/2026.
There have been changes in the last two weeks to Part 516.
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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 516New Animal Drugs for Minor Use and Minor Species516.1 – 516.2475
Subpart AGeneral Provisions516.1 – 516.3
§ 516.1Scope.
§ 516.2Purpose.
§ 516.3Definitions.
Subpart BDesignation of a Minor Use or Minor Species New Animal Drug516.11 – 516.52
Subpart CIndex of Legally Marketed Unapproved New Animal Drugs for Minor Species516.111 – 516.171
Subpart D [Reserved]
Subpart EConditionally Approved New Animal Drugs For Minor Use and Minor Species516.498 – 516.2475
§ 516.498Crofelemer.
§ 516.570Doramectin.
§ 516.900Fluralaner.
§ 516.1012Fuzapladib.
§ 516.1287Lotilaner, moxidectin, praziquantel, and pyrantel.
§ 516.1449Molidustat oral suspension.
§ 516.1760Phenobarbital.
§ 516.1780Pimobendan.
§ 516.2106Sirolimus.
§ 516.2475Torsemide.