how long can you store insulin in the fridge
Opened vials of the following insulins and mixtures are stable for 28 days either at room temperature (defined by manufacturers as 77 to 86 degrees) or in a refrigerator (36 to 46 degrees): insulin glargine (Lantus), insulin glulisine (Apidra), insulin aspart (NovoLog), insulin lispro (Humalog), Novolin-N, Humulin-N, Novolin-R, Humulin-R, and ...
Be sure to read and follow these recommendations. As long as vials or pens are stored unopened in the refrigerator (at 36 to 46 degrees Fahrenheit), they are good until the expiration date on the container. Questions about the insulin's potency start when you open the vial or pen and begin to use it.