The present invention relates to a stable, low viscosity antibody formulation, wherein the formulation comprises a high concentration of anti-IL6 antibody. In some embodiments, the invention is directed to a stable, low viscosity antibody formulation comprising about 50 mg/mL to about 400 mg/mL of an anti-IL6 antibody, and arginine, wherein the antibody formulation is in an aqueous solution and has a viscosity of less than 20 cP at 23° C. Also provided are methods of making and methods of using such antibody formulations.
