Anti‐Inflammatory Effects of p‐Coumaric Acid, a Natural Compound of <i>Oldenlandia diffusa</i>, on Arthritis Model Rats

OD may exert its anti-inflammatory effect on RA via its active ingredient, p-CA. This information sheds light on the mechanism by which OD exerts its anti-inflammatory effort in RA and forms the basis for further development of therapeutic agents for RA.