HAYWARD, Calif.--(BUSINESS WIRE)--Impax Laboratories, Inc. (NASDAQ:IPXL) today announced that the U.S. Food and Drug Administration (FDA) has granted final approval of the Company’s Abbreviated New Drug Application (ANDA) for the generic version of OPANA® ER (oxymorphone hydrochloride) Extended Release 30mg tablet. In June 2010, the Company was granted final approval for the 5mg, 10mg, 20mg, and 40mg tablets.