Janumet 50 Mg/500 Mg Tablet 15's An Anti-Diabetic Combination Drug Of Sitagliptin (Dpp4 Inhibitors) And Metformin (Biguanides). Sitagliptin Is a Dipeptidyl Peptidase-4 (Dpp-4) Inhibitor That Works By Increasing The Amounts Of Certain Natural Substances That Lower Blood Sugar Levels When They Are High.Disclaimer:For More Information Contact Your Physician