Subjects will complete the OA Pain Score and Subject Global Evaluation at clinic visits on Day 1 and Weeks 13, 26, 39, and 52. Concurrent medications, adverse events, and study drug compliance will be reviewed and recorded by the study staff throughout the Treatment Period at clinic visits on Weeks 13, 26, 39, and 52 (End-of-Study/Final Visit). At the week 52 visit (End-of-Study/Final Visit), a physical examination and laboratory examination will be performed.