The generic name for Util Insulin 50 is Arginin Zinc Recombinant Lysergic Insulin Blend Injection (50R), which is not a short-acting insulin, it is a premixed insulin, a suspension containing lysergic insulin (a rapid-acting insulin analog) with arginin zinc lysergic insulin (an intermediate-acting insulin analog). Arginin Zinc Recombinant Lyspro Insulin Mix Injection (50R) is a premix of rapid-acting insulin and intermediate-acting insulin, which has a short onset of action of about 15 minutes, while the active effects of the drug are maintained for about 15 hours. Arginine Zinc Recombinant Lyspro Insulin Mix Injection (50R) is often injected immediately before meals, and the injection procedure should be carried out in strict accordance with the instructions to ensure the effectiveness of the drug. The main adverse reaction of Arginine Zinc Recombinant Lysine Insulin Mix Injection (50R) is hypoglycemia, in addition to the possibility of local adverse reactions, such as redness, swelling, rash and so on. The use of this drug is prohibited in patients with hypoglycemia and hypersensitivity to lysergic insulin. Insulin use and dosage adjustment should be in accordance with the doctor’s instructions, to avoid the adverse effects of blind use of the drug.