Eating hypoglycemic drugs dry mouth is considered to be physiological factors, may also be caused by poor glycemic control, the former caused by drinking more water can be relieved, the latter caused by the need for targeted treatment under the guidance of the doctor, such as metformin, insulin and so on. 1. Physiological factors: eating hypoglycemic drugs itself generally does not cause symptoms of dry mouth, dry mouth may be insufficient water intake, while the activities consume too much water, such cases can be relieved by drinking more water. 2. Poor glycemic control: although taking hypoglycemic drugs, but if the glycemic control is poor, there will still be symptoms of diabetes, resulting in dry mouth, in this case you need to standardize the use of metformin or insulin and other hypoglycemic drugs under the guidance of a doctor to maintain blood sugar stabilization after the symptom is generally able to relieve. Patients taking hypoglycemic drugs with dry mouth symptoms that do not resolve, it is recommended to go to the hospital and ask the doctor to make a judgment and give a treatment plan.