Certolizumab pegol (brand name Cimzia) is a biologic medication that belongs to the class of drugs known as TNF inhibitors. It is a pegylated, humanized, anti-tumor necrosis factor (TNF) antibody. TNF is a protein that plays a role in the inflammatory process in the body and is involved in a number of diseases such as rheumatoid arthritis, psoriatic arthritis, Crohn's disease, and ulcerative colitis.
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