Benlysta (Belimumab) — it is infused in 40-50 minutes monthly. Benlysta is a biologic medication used to treat Systemic Lupus Erythematosus. It works by blocking a molecule that promotes inflammation from B-cells. It is administered as a monthly infusion through an IV in an infusion center. If you have SLE our rheumatologists will be happy to discuss whether benlysta is right for you.