Zogenix, Inc. (ZGNX: Quote) said Friday that the U.S. Food and Drug Administration's Anesthetic and Analgesic Drug Products Advisory Committee voted 2-11, with 1 abstention, against the approval of Zohydro ER, an extended-release formulation of hydrocodone without acetaminophen, for the management of moderate-to-severe chronic pain when a continuous, around-the-clock opioid analgesic is needed for an extended period of time.