Whether 5 units of insulin is high or not needs to be judged based on the patient’s specific condition and cannot be generalized. If the doctor recommends taking 5 units, it is not considered high. It is recommended to inject a reasonable dose of insulin under the guidance of the doctor. Insulin is suitable for patients with type 1 diabetes and type 2 diabetes, patients with acute or chronic complications of diabetes (such as infections, diabetic ketoacidosis, diabetic nephropathy, hepatic insufficiency, etc.), surgery, pregnancy and childbirth, new onset of the disease and difficult to identify with type 1 diabetes, as well as patients with certain special types of diabetes. It should be noted that it is contraindicated for people with hypoglycemia and allergy to insulin. Adverse reactions such as hypoglycemia and allergic reactions may occur after using insulin injections. Patients who need to use insulin treatment should use the drug under the guidance of a doctor, and should not blindly use the drug treatment on their own.