Nateglinide is effective in the treatment of type 2 diabetes mellitus, with side effects such as hypoglycemia, elevated liver enzymes, drug allergies, and gastrointestinal reactions. 1. Efficacy: for the treatment of patients with type 2 diabetes mellitus that cannot be effectively controlled by diet, exercise and metformin. 2. Side effects include hypoglycemia, elevated liver enzymes, drug allergy, gastrointestinal reactions, etc. Hypoglycemia: manifested as palpitations (rapid heartbeat, often accompanied by panic), weakness, fatigue, nausea, increased appetite, dizziness, excessive sweating, tremor. Elevated liver enzymes: are relatively mild and rarely lead to discontinuation of the drug. Drug allergy: including hives, itching, and rash. Gastrointestinal reactions: diarrhea, abdominal pain, dyspepsia, etc. 3. Contraindication: prohibited in diabetic ketoacidosis, type 1 diabetes mellitus patients. If you need to take Nateglinide tablets, it is recommended to consult a professional doctor and standardize the use of medication under his guidance.