Abstract: Provided is a liquid preparation containing an anti-IL-17 antibody at a concentration of 20 mg/mL to 200 mg/mL, a citrate buffer at a concentration of 10 mM to 50 mM, a sucrose at a concentration of 20 mg/mL to 120 mg/mL or arginine at a concentration of 50 mM to 250 mM, and polysorbate 80 at a concentration of 0.1 mg/mL to 5 mg/mL. In addition, the liquid preparation has a pH of 6.0±0.5, wherein the anti-IL-17 antibody is an anti-IL-17A/F monoclonal antibody. The liquid preparation can be a stable subcutaneous injection preparation, and can be used to treat IL-17A and/or IL-17F related diseases, such as psoriasis, psoriatic arthritis, ankylosing spondylitis, rheumatoid arthritis, multiple sclerosis, systemic lupus erythematosus, osteoarthritis or inflammatory bowel disease.

Abstract: Provided is a liquid preparation containing an anti-IL-17 antibody at a concentration of 20 mg/mL to 200 mg/mL, a citrate buffer at a concentration of 10 mM to 50 mM, a sucrose at a concentration of 20 mg/mL to 120 mg/mL or arginine at a concentration of 50 mM to 250 mM, and polysorbate 80 at a concentration of 0.1 mg/mL to 5 mg/mL. In addition, the liquid preparation has a pH of 6.0±0.5, wherein the anti-IL-17 antibody is an anti-IL-17A/F monoclonal antibody. The liquid preparation can be a stable subcutaneous injection preparation, and can be used to treat IL-17A and/or IL-17F related diseases, such as psoriasis, psoriatic arthritis, ankylosing spondylitis, rheumatoid arthritis, multiple sclerosis, systemic lupus erythematosus, osteoarthritis or inflammatory bowel disease.