Metformin also increases your body's response to insulin, Metformin may decrease the risk of lactic acidosis while you are taking this medicine. Glucophage tablets are standard release tablets that are taken two or three times a day either during or just after meals. You should know that sometimes the tablet shell may appear in your stool. Glucophage is used to control blood sugar levels. Drink plenty of fluids while taking this medication unless otherwise directed by your doctor. In type 2 diabetes in people who are overweight. Metformin is used with a proper diet and exercise to prevent diabetes in people who are overweight. Insulin would normally make the cells remove sugar from the intestines into the bloodstream after eating. Glucophage is used to control blood sugar levels.