Xinfeng Capsule combined with conventional Western medicine for rheumatoid arthritis: Efficacy, safety, and subgroup analysis in a multicenter real-world study.
Rheumatoid arthritis (RA) is a progressive autoimmune disease with high disability rates and heavy economic burdens, affecting over 5 million Chinese adults. Conventional Western medicines have limitations, including 20% to 30% inadequate response, adverse effects, and high cost…