Answer
Unused pens should be refrigerated, protected from light and never frozen. Pens in use follow product-specific room-temperature instructions and should be kept away from direct heat and light.
Sources for this answer
- Toujeo 300 units/ml SoloStar, solution for injection in a pre-filled pen — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.