RT Journal A1 Geller AS T1 COrrecting several oversimplifications of chronic opioid therapy JF Archives of Internal Medicine JO Archives of Internal Medicine YR 2011 FD March 28 VO 171 IS 6 SP 597 OP 597 DO 10.1001/archinternmed.2011.84 UL http://dx.doi.org/10.1001/archinternmed.2011.84 AB Hydrocodone's class III Drug Enforcement Administration (DEA) regulatory designation permits clinicians convenient telephone prescriptions on behalf of patient care, but hydrocodone is roughly equianalgesic with oxycodone, a class II opioid. Clearly, it is erroneous to reproach schedule II over III opioids by inaccurately correlating potency to legislative scheduling. Schedule V liquid codeine is class III as tablets. Ingesting additional tabs of schedule III opioids effectively enhances potency. Oxymorphone is class II but is 10 times more potent than morphine,2 also class II.