Gwazi is the trade name of the drug called metformin tablets, which is an imported drug, there is no difference in efficacy with the domestic metformin, but there is a difference in price. Metformin tablets are used to treat diabetes that cannot be effectively controlled by diet and exercise alone, especially obese type 2 diabetes. For type 1 or type 2 diabetes mellitus in combination with insulin can increase the glucose-lowering effect of insulin. This product can be used in combination with sulfonylurea oral hypoglycemic drugs to have a synergistic hypoglycemic effect. Due to different manufacturers, the price of imported metformin is higher than domestic metformin, although the ingredients are the same. Common adverse reactions of this product include nausea, vomiting, diarrhea, gastric distension, generalized weakness. It is contraindicated in severe renal insufficiency, decompensated heart failure, severe infection, trauma, and hypersensitivity to Metformin ingredients. Metformin is a prescription drug and it is recommended that patients should use the drug under the supervision of a doctor.