Clinically, there are many types and dosage forms of insulin. How much insulin to take 4 units of insulin needs to be based on the type of insulin, the basic condition of the patient, and the time of medication, and cannot be generalized. 1. Types of insulin: Generally the initial dose of long acting insulin such as Dieter’s insulin or Glucagon is around 10 units, of course, it needs to be judged in combination with the fasting blood glucose level. For ultra-short-acting insulin, the initial dose needs to be judged according to the 2-hour postprandial blood glucose, so an injection of 4 units may be appropriate, or it may be underdosed. 2. The basic condition of the patient: for example, there are differences in the insulin dosage injected by the elderly and the young, and there is also often a difference in the dosage injected by patients with type 1 diabetes and those with type 2 diabetes. Whether it is more than 4 units, in addition to judging the patient’s sensitivity to insulin, but also in combination with the blood glucose level, including fasting blood glucose and postprandial blood glucose. 3. Dosing time: for example, before bedtime, insulin injection to prevent nighttime hypoglycemia, whether more than 4 units depends on the blood glucose level before bedtime. The specific dosage and usage of insulin should follow the doctor’s instructions, and you should not increase or decrease the dosage of the drug on your own to avoid adverse reactions, and severe hypoglycemia can be life-threatening.