OBJECTIVE: To investigate the efficacy of Zhuifeng tougu capsules, ZFTG) in the treatment of rheumatoid arthritis (RA) in rats and study its mechanism, focusing on the toll-like receptor 2/ 4-nuclear factor kappa-B (TLR2/4-NF-kappa B) signaling pathway. METHODS: Type. collagen and an artificial climate box were used to construct the rat model of collagen-induced arthritis with wind-cold-dampness arthralgia syndrome. The rats were divided randomly into a control group, wind-cold-dampness syndrome model group, and high-, medium-, and low-dose ZFTG groups. The methotrexate (MTX) control group was...