Each 120 mg or 400 mg vial contains 120 mg or 400 mg of belimumab, respectively. After reconstitution, the solution contains 80 mg belimumab per ml.
Each 1-ml pre-filled pen contains 200 mg of belimumab.
Belimumab is a human, IgG1λ monoclonal antibody, produced in a mammalian cell line (NS0) by recombinant DNA technology.
Excipients/Inactive Ingredients: Powder for concentrate for solution for infusion: Citric acid monohydrate (E330), Sodium citrate (E331), Sucrose, Polysorbate 80.
Solution for injection: L-arginine hydrochloride, L-histidine, L-histidine monohydrochloride, Polysorbate 80, Sodium chloride, Water for injection.