Hydrocodone is an orally active analgesic and antitussive Schedule II narcotic that is marketed in multi-ingredient Schedule III products. Hydrocodone has an analgesic potency similar to or greater than that of oral morphine. Sales and production of this drug have increased significantly in recent years (a four-fold increase between 1990 and 2000), as have diversion and illicit use. Trade names include Anexsia®, Hycodan®, Hycomine®, Lorcet®, Lortab®, Tussionex®, Tylox®, Vicodin®, and Vicoprofen®. These are available as tablets, capsules, and/or syrups. Generally; this drug is abused by oral rather than intravenous administration. Currently, about 20 tons of hydrocodone products are used annually in the United States.