CFR›Title 21›Chapter I›Part 340›21 CFR Part 340 Subpart C Citation21 CFR Part 340 Subpart CContainsSection § 340.50CorpusDaily eCFRDisplayed edition2026-10-02Last updated2026-10-02 Subpart C—Labeling Sections § 340.50 § 340.50 Labeling of stimulant drug products. Authority21 U.S.C. 321, 351, 352, 353, 355, 360, 371.Source53 FR 6105, Feb. 29, 1988, unless otherwise noted.