Overview A Study of an Investigational Drug Sitagliptin for Type 2 Diabetes Mellitus (0431-044) Status: Completed Trial end date: 2006-03-01 Target enrollment: Participant gender: Summary The purpose of this trial is to determine the efficacy and safety of an investigational drug in patients with type 2 diabetes mellitus. Phase: Phase 2 Details Lead Sponsor: Merck Sharp & Dohme Corp.Treatments: Sitagliptin Phosphate