EXTON, Pa.--(BUSINESS WIRE)--Adolor Corporation (Nasdaq:ADLR) announced today that the U.S. Food and Drug Administration (FDA) has communicated to the company that it will not be issuing an action letter on the NDA for Entereg® (alvimopan) for postoperative ileus by May 10, 2008, the scheduled PDUFA date. The FDA did not provide a specific date, but informed the company that it expects to issue the action letter shortly.