The present invention relates to a composition for the prevention or treatment of physiological and pathological disorders mediated by cyclooxygenase (COX) and/or 5-lipoxygenase (5-LO) comprising Uncaria genus plant, in particular, Uncaria gambir, or its extract, and to a combined composition of said Uncaria genus plant extract and Scutellaria baicalensis extract and/or Camellia sinensis extract. The present composition shows excellent COX and/5-LO inhibition effects, and thus can be used for the prevention or treatment of disease and disorders mediated by various COX pathway and/or 5-LO pathway, including osteoarthritis and rheumatoid arthritis.