Regulations last checked for updates: Jan 13, 2026

Title 21 - Food and Drugs last revised: Dec 18, 2026
All TitlesTitle 21Chapter IPart 336Subpart B - Subpart B—Active Ingredients
authority: 21 U.S.C. 321,351,352,353,355,360,371
source: 52 FR 15892, Apr. 30, 1987, unless otherwise noted.
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