Regulations last checked for updates: Jan 18, 2025

Title 21 - Food and Drugs last revised: Dec 26, 2025
All TitlesTitle 21Chapter IPart 352Subpart B - Subpart B—Active Ingredients
authority: 21 U.S.C. 321,351,352,353,355,360,371
source: 64 FR 27687, May 21, 1999, unless otherwise noted.
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