Hydrocodone addiction is a growing crisis in the United States. While illegal drugs like cocaine, marijuana, methamphetamine, and heroin remain in the headlines many individuals may be surprised to know that hydrocodone addiction could lurk right behind them as one of the most widely-abused drugs of addiction. In fact, the federal Drug Enforcement Administration believes hydrocodone may be the most abused prescription drug in the country. Nationwide, its use has quadrupled in the last ten years, while emergency room visits attributed to hydrocodone abuse soared 500 percent.