Low-Arginine Zinc Insulin Injection is an intermediate-acting animal insulin preparation that is absorbed by the gradual release of free insulin at the injection site after subcutaneous injection. The main pharmacodynamic effect is to lower blood glucose. Low-arginine zinc insulin is a sterile suspension of insulin (porcine) containing fish protein with zinc chloride. Low-arginine protein zinc insulin is injected subcutaneously once a day 30-60 minutes before breakfast, and sometimes another injection before dinner is needed. The effect starts 2-4 hours after subcutaneous injection, peaks in 8-12 hours, and the duration of action is 18-24 hours. Note that low-arginine zinc insulin is contraindicated in patients with hypoglycemia and islet cell tumors. It should not be used intravenously and should be shaken well before use. Low-arginine protein zinc insulin needs to be used in strict accordance with medical advice, do not use the drug without authorization, so as not to cause adverse consequences.