Normal people are not allowed to take insulin. Insulin is suitable for the treatment of diabetic patients, and should not be used blindly, the use of drugs need to consult a doctor. Insulin is mainly applicable to the treatment of diabetic patients. Diabetic patients are mainly caused by the relative and absolute insufficiency of insulin secretion, through the external insulin adjustment of blood glucose, so that blood glucose control stabilization. Normal people with normal pancreatic function do not need insulin. If blindly injecting insulin may cause hypoglycemic reaction. In mild cases, dizziness, cold sweat, weakness, etc., and in severe cases, hypoglycemic coma may occur, while causing serious damage to the body. Insulin is a prescription drug, it is recommended to apply under the guidance of endocrinologists, do not blindly use the drug, and serious adverse reactions. Diabetic patients who experience discomfort after use should go to the hospital in time to avoid delaying their condition.