Sulphonylureas, Injected hypoglycemic (exanatide or insulin), Weight loss medications, Thiazolidenediones, Glucocorticoids (inhaled glucocorticoids are permitted), Digoxin, Anticoagulants, Phenytoin, Loratadine, Erythromycin, MAO-inhibitors, NSAIDs (ASA ≤ 81 mg/d is permitted), COX-2 Inhibitors, Cholestryramine or fibrates, DPP-IV inhibitors, Any herbal medications unless reviewed with study doctor