The number of days an insulin can be applied depends on the patient’s specific blood sugar situation, and the condition of diabetes. There are many types of insulins, including rapid-acting insulin, premixed insulin, and long-acting insulin. If it is taken with oral medication, generally choose long-acting insulin, combined with mealtime regulator this treatment method, insulin can be injected once a day. If the long-acting long-acting insulin, the dosage is smaller, the application time will be longer, some patients may apply only a dozen units of insulin every day, this one insulin can be applied close to a month. If it is a combination of three short and one long-acting insulin treatment, the short-acting insulin is generally applied in a larger amount.