The generic name of Gevax is Metformin Hydrochloride Tablets, which is helpful in lowering both pre-meal and post-meal blood glucose. Metformin Hydrochloride Tablets is the most widely used hypoglycemic drug, mainly through the inhibition of hepatic glycogen output, increase the sensitivity of peripheral tissues to insulin, increase the uptake and utilization of glucose to play the role of hypoglycemic, fasting and postprandial glucose have a lowering effect, is commonly used in the treatment of type 2 diabetes mellitus, especially obese type 2 diabetes mellitus. Common adverse reactions include gastrointestinal symptoms such as nausea, vomiting, gastric distension, fatigue, diarrhea, and also lactic acidosis, reduced absorption of vitamin B12. It is contraindicated in severe renal dysfunction, heart failure, severe infection, trauma, major surgery, metabolic acidosis and also allergy. Metformin hydrochloride tablets should be used under medical supervision.