Answer
Keep the unopened pack refrigerated, protected from light and never frozen. After mixing, use it immediately and discard cloudy, discoloured solutions or those containing particles.
Sources for this answer
- NovoThirteen 2500 IU powder and solvent for solution for injection — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.