Enspryng solution for SC injection is a colorless to slightly yellow liquid supplied in a PFS filled with 1 mL of solution. Each PFS contains 120 mg of satralizumab.
Enspryng is a recombinant humanized immunoglobulin G2 (IgG2) monoclonal antibody against the human interleukin-6 receptor (IL-6R), produced in Chinese hamster ovary cells by recombinant DNA technology (including a pH-dependent binding technology).
Excipients/Inactive Ingredients: L-Histidine, L-Aspartic Acid, L-Arginine, Poloxamer 188b, Water for Injection.