Metformin enteric-coated tablets should refer to metformin hydrochloride enteric-coated tablets, metformin enteric-coated tablets are recommended to be taken half an hour before meals. Metformin is the first-line therapeutic drug for type 2 diabetes mellitus, which is mainly used to lower glucose by inhibiting the absorption of glucose from the intestines, reducing the breakdown of hepatic glycogen into glucose, and increasing the sensitivity of body tissues to insulin, thus achieving the purpose of lowering glucose. Metformin enteric-coated tablets, in order to avoid the influence of food on the drug into the intestinal digestion and absorption, so generally need to be taken half an hour before meals, so that the effect will be better. Metformin may cause gastrointestinal discomfort such as nausea, vomiting, diarrhea, abdominal pain, stomach pain, etc. It is contraindicated if you are allergic to Metformin or its excipients, or if you have severe liver or kidney failure. Metformin should always be taken under the supervision of a doctor and seek medical attention if you feel unwell.