A Study of Single Dose Pain Therapy in Patients With Painful Diabetic Neuropathy (0000-115)

Inclusion Criteria: * Patient has been treated for type 1 or 2 diabetes mellitus with glycosylated hemoglobin * Patient has pain in both feet that occurred after onset of diabetes * Patient agrees to maintain a consistent activity level throughout the study * Patient is not on chronic pain therapy, or is on a stable dose of one pain therapy * Female patients of reproductive potential must agree to use two acceptable methods of birth control through out the study * Patients taking a pain medication must be on a stable dose at least 1 month prior to participating in study Exclusion Criteria: * Patient has a history of congestive heart failure * Patient has/had a seizure disorder * Patient has tried and failed 3 or more drugs to treat neuropathic pain * Patient is currently taking pregabalin or duloxetine hydrochloride * Patient has had a malignancy within the past 2 years (excluding basal cell carcinoma) * Patient has history of hepatitis B or C or HIV infection * Patient has skin-condition that may decrease sensitivity in area of neuropathic pain