Metformin 1000 mg + Teneligliptin 20 mg SR Tabs is a combination of two antidiabetic medicines: Metformin and Teneligliptin. Metformin is an antidiabetic medication (biguanide). It works by lowering glucose production in the liver, delaying glucose absorption from intestines and increasing the body's sensitivity to insulin. Teneligliptin is a dipeptidyl peptidase-4 inhibitor which works by increasing the release of insulin from pancreas and decreasing the hormones that raise blood sugar levels. This reduces both fasting and post meal sugar levels. Together, they provide better control of blood sugar. Take it with food to lower your chance of having an upset stomach. Tell your doctor immediately if you experience any deep or rapid breathing, persistent nausea, vomiting, and stomach pain as Metformin + Teneligliptin may cause a rare but serious condition called lactic acidosis, which is an excess of lactic acid in the blood.Teneligliptin belongs to a class of drugs called DPP-4 inhibitors (dipeptidyl peptidase-4 inhibitors). It works by increasing levels of natural substances in your body that help control blood sugar.Metformin belongs to a class of drugs called biguanides. It works by helping to restore your body's natural ability to regulate blood sugar levels..