Metformin is a glucose-lowering drug that is generally not recommended for normal people. Metformin is a glucose-lowering drug that can improve the condition of insulin resistance, and can also increase the utilization of glucose by blood cells, brain tissues, etc., and reduce the output of liver sugar, etc., so as to achieve the effect of treating diabetes. People who are allergic to metformin should be prohibited from using it, and patients with severe liver or kidney insufficiency should be prohibited from using it, and the use of metformin may cause symptoms such as diarrhea, fatigue and indigestion. When taking Metformin, patients should stop using the drug immediately if any adverse reaction occurs, and go to the hospital in time for consultation. When taking the drug should be under the guidance and advice of a professional doctor, remember not to take it privately to avoid adverse effects.