Insulin is a protein preparation. It must be stored in a cold place (2～10℃), away from direct sunlight. It is best to store it in a refrigerator, such as freezing, overheating and vibration, which will affect the potency of insulin (failure); If it freezes, precipitates, clots or the liquid turns yellow, it cannot be reused.






(1) Insulin must be used within the validity period and cannot be used again after the expiration date.
(2) Insulin used in unopened bottles should be stored in a cold place at 2～10℃. Some people want to keep it for a longer period of time, try to put it in the freezer for freezing, and hope that it will be defrosted when it is used, just like chicken, duck, fish, etc. This approach is wrong. Once frozen, the protein is denatured and loses its hypoglycemic effect, causing pain and allergies during injection.
(3) The bottled insulin can be stored in the refrigerator at 2～10℃ for 1～3 months after opening (with a syringe). Insulin injections that have already been used can be stored at room temperature (10-25°C, maximum 25°C) for up to 4-6 weeks.
(4) Nuovo Refills and Humulin should be stored at 2～10℃ before use. Once installed on the pen, they should be stored at room temperature, and the storage time can be up to 4 weeks.
(5) Insulin cannot be checked in luggage during the flight. Even in summer, the temperature in the luggage compartment at high altitude will be tens of degrees Celsius below zero, which will freeze the insulin. You should put the insulin in your handbag.