Metformin and Dagliflozin tablets can be used simultaneously to improve blood glucose control on the basis of diet and exercise, and should be used under the guidance of a doctor. Metformin and Dagliflozin tablets are both hypoglycemic drugs, mainly used in the treatment of type 2 diabetes. Metformin belongs to the first-line drug, when the control is not good when used alone, Dagliflozin can be used in combination with metformin to improve blood sugar control on the basis of diet and exercise. Common adverse reactions to metformin include gastrointestinal reactions, skin irritation and lactic acidosis. It is contraindicated in patients who are allergic to the drug, have serious complications, alcoholism, and severe renal insufficiency. Dagliflozin may cause side effects such as genitourinary infections, and is contraindicated in patients with allergy to this drug, severe infections, renal insufficiency, diabetic ketoacidosis, pancreatic insufficiency, and alcoholism. Patients should follow the doctor’s instructions to take the drug, not to take it privately.