NOVOLIN 80/20 (Insulin) is a hormone used to treat diabetes mellitus (sugar diabetes). NOVOLIN 80/20 (Insulin) contains 20 units of regular insulin (Insulin Injection 20%) and 80 units of NPH Insulin (Insulin Isophane Human Biosynthetic 80%). The concentration of NOVOLIN 80/20 (Insulin) is measured in USP Insulin Units and is usually expressed in terms such as U-100 insulin. NOVOLIN 80/20 (Insulin) Cartridges come pre-marked. You must use a 3ml Pen to inject the NOVOLIN 80/20 (Insulin) that we provide you with. NOVOLIN 80/20 (Insulin) VIAL Insulin doses are measured and injected with specially marked insulin syringes. The appropriate syringe is chosen based on your insulin dose to make measuring the dose easy to read. This helps you measure your dose accurately . These syringes come in three sizes: 3/10 cubic centimeters (cc) measuring up to 30 USP Units of insulin, 1/2 cc measuring up to 50 USP Units of insulin, and 1 cc measuring up to 100 USP Units of insulin. It is important to follow any instructions from your doctor about the careful selection and rotation of injection sites on your body. NOVOLIN 80/20 (Insulin) should be kept refrigerated but can be stored at room temperature for upto 30 days.