EXTON, Pa.--(BUSINESS WIRE)--Adolor Corporation (NasdaqGM:ADLR) today announced the initiation of clinical testing of ADL7445, its proprietary, oral mu opioid receptor antagonist for the treatment of Opioid Bowel Dysfunction (OBD). The Phase 1, single ascending dose trial in healthy volunteers will assess safety and tolerability of the compound and will be followed by a multiple ascending dose study in early 2010.