The prevalence and predictors of herbal medicines usage among adult rheumatoid arthritis patients: A case-control study

This study showed that more than half of RA patients used herbal medicines. All herbal medicines (thyme, chamomile, borage, lavender, ginger, and cinnamon) had anti-inflammatory effects. Yet, further studies have to be conducted to evaluate the efficacy and safety of herbal medicines usage in RA patients.