Eating metformin body weak, may be metformin this drug itself side effects caused by common adverse reactions are nausea, vomiting, diarrhea, etc., the occurrence of the above may lead to weakness, patients are advised to adjust the dosage of the drug under the guidance of the doctor or change the drug for treatment. Metformin is a glucose-lowering drug, commonly used in patients with type 2 diabetes who are unsatisfied with simple dietary control, especially those who are obese and accompanied by hyperinsulinemia, this drug not only has the effect of lowering blood glucose, but also has the effect of reducing the patient’s weight and hyperinsulinemia. Diabetic patients should pay attention to the daily control of total food calories and body weight, reduce the fat content of food, increase the content of food fiber. Under the guidance of the doctor for treatment, do not use drugs or adjust the dosage without authorization. Regular checkups are needed and prompt medical attention should be sought if there is any discomfort. There are many reasons for physical weakness, and patients are advised to seek prompt medical attention for a clear diagnosis.