How Long Does Humulin N Last?

16.2 Storage and Handling Dispense in the original sealed carton with the enclosed Instructions for Use. Protect from heat and light. Do not freeze. Do not use if it has been frozen. See Table 2 below for storage conditions. Table 2: Storage Conditions for HUMULIN N Vials and Pens a When stored at room temperature, HUMULIN N vial can only be used for a total of 31 days including both not in-use (unopened) and in-use (opened) storage time. b When stored at room temperature, HUMULIN N KwikPen can only be used for a total of 14 days including both not in-use (unopened) and in-use (opened) storage time. Not In-use (Unopened) In-use (Opened) Room Temperature (up to 86°F [30°C]) Refrigerated (36° to 46°F [2° to 8°C]) Room Temperature (up to 86°F [30°C]) Refrigerated (36° to 46°F [2° to 8°C]) 10 mL multiple-dose vial a 31 days Until expiration date 31 days 31 days 3 mL single-patient-use HUMULIN N KwikPen b 14 days Until expiration date 14 days Do not refrigerate.