Metformin enteric tablets and extended-release tablets are both the same type of glucose-lowering drugs, but there are differences in their use. First, metformin enteric tablets are short-acting hypoglycemic drugs, while metformin extended-release tablets are long-acting hypoglycemic drugs, the duration of action is not the same. Second, metformin enteric tablets are taken in different ways, generally 3 times a day, before three meals a day, or 2 times a day, before breakfast and dinner, 1-2 tablets for 1 time. Metformin extended-release tablets are taken only once a day, the maximum dose can be eaten to 2000mg, if the effect of using this is not good, you can switch to 1000mg, 2 times a day.