Questcor Pharmaceuticals, Inc. (AMEX:QSC) announced today the initiation of patient dosing under its investigational new drug (IND) application with the U.S. Food & Drug Administration (FDA) for QSC-001, a unique orally disintegrating tablet (ODT) formulation of hydrocodone bitartrate and acetaminophen (HB/APAP) for the treatment of moderate to moderately severe pain. QSC-001 was formulated for Questcor by Eurand and will utilize Eurand’s proprietary Microcaps® taste-masking and AdvaTab™ ODT technologies. Questcor owns the world-wide rights to commercialize QSC-001 and Eurand will exclusively supply the product and receive a royalty on product sales.