Sitagliptin Phosphate Tablets is a potent and highly selective dipeptidyl peptidase 4 inhibitor with hypoglycemic properties that improves glycemic control by increasing the level of active enteric insulinotropic hormone, and may be used in the treatment of type 2 diabetes mellitus. The drug may cause adverse reactions such as nasopharyngitis, upper respiratory tract infection, headache, hypoglycemia, diarrhea, and abdominal pain. The drug can be used in monotherapy with dietary control and exercise to improve glycemic control in patients with type 2 diabetes, or in combination with metformin or insulin. However, it is contraindicated in patients who are allergic to the product. When using this drug, it should be noted that this product should not be used in patients with type 1 diabetes mellitus or for the treatment of diabetic ketoacidosis; the drug has the potential to cause acute pancreatitis, if the patient develops persistent, severe abdominal pain, suspected of pancreatitis, the drug should be promptly discontinued to go to the hospital; patients with moderate and severe renal insufficiency, it is recommended to reduce the dosage of this product. If you need to use the drug patients, it is recommended to use under the guidance of a doctor, avoid unauthorized use of drugs.