Mentholated insulin is usually used with Novo and pens. 1. Insulin injection must be matched with the insulin pen can be used, they can not be mixed between them, so as not to cause the inaccuracy of the injection dose, and make the blood sugar instability. 2. Mentholated insulin injection needs to be injected with a specialized insulin nootropic and pen, insulin pen is more convenient to use, do not need extra insulin extraction inside the vials, and when you go out, you only need to carry an insulin pen. 3. Patients need to be instructed by a doctor when using insulin pens. After disinfecting the skin, adjust the dosage button to the desired dosage unit when injecting, then insert the needle into the subcutaneous tissue and press the dosage button to the bottom to complete the injection. Patients with diabetes need to monitor their blood glucose regularly when using insulin, such as abnormal blood glucose need to consult a doctor in time, and the drug needs to be reasonably applied under the guidance of a doctor.