After initial use, a cartridge (PenFill®) or a prefilled syringe (including FlexPen® or InnoLet®) may be used for up to 42 days if it is kept at room temperature, below 30°C (86°F). In-use cartridges and prefilled syringes in-use must NOT be stored in a refrigerator and must NOT be stored with the needle in place. Keep all cartridges and prefilled syringes away from direct heat and sunlight.
Not in-use (unopened) LEVEMIR PenFill®, FlexPen® or InnoLet® can be used until the expiration date printed on the label if they are stored in a refrigerator. Keep unused cartridges and prefilled syringes in the carton so they will stay clean and protected from light.