21 C.F.R. § 1302.04 Location and size of symbol on label and labeling.
Title 21 - Food and Drugs
The symbol shall be prominently located on the label or the labeling of the commercial container and/or the panel of the commercial container normally displayed to dispensers of any controlled substance. The symbol on labels shall be clear and large enough to afford easy identification of the schedule of the controlled substance upon inspection without removal from the dispenser's shelf. The symbol on all other labeling shall be clear and large enough to afford prompt identification of the controlled substance upon inspection of the labeling. [62 FR 13958, Mar. 24, 1997]
Title 21: Food and Drugs
PART 1302—LABELING AND PACKAGING REQUIREMENTS FOR CONTROLLED SUBSTANCES
§ 1302.04 Location and size of symbol on label and labeling.