Adjunct to diet & exercise to improve glycemic control in patients w/ type 2 DM as monotherapy. In combination w/ metformin/sulfonylurea (SU)/thiazolidinedione (TZD) alone when diet & exercise do not result in adequate glycemic control. In triple combination w/ SU & metformin when diet & exercise plus dual therapy do not provide adequate glycemic control. In combination w/ insulin (w/ or w/o metformin) when diet, exercise & stable dose of insulin do not result in adequate glycemic control. Initial combination w/ metformin in patients w/ type 2 DM whose diabetes is not adequately controlled by diet & exercise alone.