Used in the treatment of autoimmune diseases such as rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, and ulcerative colitis. It works by neutralizing tumor necrosis factor-alpha (TNF-α), a key mediator of inflammation, thereby reducing joint damage, pain, swelling, and disease progression. Administered via subcutaneous or intravenous routes, it helps improve physical function and induce remission in chronic inflammatory conditions. Also utilized in research settings as a reference standard for bioassays and antibody development.