- Have been treated for longer than 2 weeks with any of the following excluded medications within 3 months prior to screening: *Insulin; *Alpha-glucosidase inhibitors (for example, Glyset® [miglitol] or Precose® [acarbose]); *Meglitinides (for example, Prandin® [repaglinide] or Starlix® [nateglinide]); *Sulfonylureas (for example, Glucotrol® [glipizide] or Micronase® [glyburide]); *Dipeptidyl peptidase IV (DPP-IV) inhibitors (for example, Januvia™ [sitagliptin])