Overview Sulfonylurea Add-on Study in Patients With Type 2 Diabetes Mellitus (0431-035) Status: Completed Trial end date: 2007-01-01 Target enrollment: Participant gender: Summary The purpose of this clinical study is to determine the safety and efficacy of an investigational drug in patients with Type 2 diabetes mellitus. Phase: Phase 3 Details Lead Sponsor: Merck Sharp & Dohme Corp.Treatments: PioglitazoneSitagliptin Phosphate