Answer
Yes, syringes used for Lantus 100 units/ml insulin glargine solution from a vial must contain no traces of any other material, and Lantus must not be mixed with other medicinal products.
Sources for this answer
- Lantus 100 units/ml solution for injection in a vialSANOFI · emc · SmPC §6.2 Incompatibilities · Version 12Document updated
Sources checked