Federal Register Notice: FDA plans to take enforcement action against unapproved drug products containing hydrocodone bitartrate, or any other salt or ester of hydrocodone, and persons who manufacture or cause the manufacture of such products or their shipment in interstate commerce. Unapproved hydrocodone products have been implicated in reports of medication errors, including improper dosing and dispensing the wrong drug. Some of these products omit important labeling warnings and information or are inappropriately labeled for use in young children. To view this notice, click here.