Answer
Store unopened Lantus 100 units/ml insulin glargine vials in a refrigerator at 2°C–8°C, do not freeze or place next to the freezer compartment or a freezer pack, and keep them in the outer carton to protect from light.
Sources for this answer
- Lantus 100 units/ml solution for injection in a vialSANOFI · emc · SmPC §6.4 Special precautions for storage · Version 12Document updated
Sources checked