Regulations last checked for updates: May 14, 2025

Title 21 - Food and Drugs last revised: May 12, 2025
All TitlesTitle 21Chapter IPart 558 - PART 558—NEW ANIMAL DRUGS FOR USE IN ANIMAL FEEDS
authority: 21 U.S.C. 354,360b,360ccc,360ccc-1,371
source: 40 FR 13959, Mar. 27, 1975, unless otherwise noted.
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