Chinese Peony

Bowen Xu et al. (2026) · Frontiers in endocrinology

This open-label randomized trial at Shanghai East Hospital compared two approaches to primary dysmenorrhea (menstrual cramping without an underlying pelvic disease) in 80 women aged 15 to 46: a Traditional Chinese Medicine protocol called Cai's Gynecology Cyclical Therapy, paired with a specific formula called the Stasis-Clearing and Meridian-Warming Method, versus standard ibuprofen. The TCM approach is built on a century-old idea from a Shanghai medical lineage: that treatment should change across the four phases of the menstrual cycle rather than staying the same throughout. Forty women received ibuprofen (a common anti-inflammatory pain reliever) for two days during each period, while the other forty received herbal decoctions -- different formulas depending on the cycle phase -- for three full menstrual cycles. Researchers tracked pain on a 0-to-10 visual pain scale and a symptom-severity score, and checked whether pain returned in the month after treatment ended. People collecting the follow-up data did not know which treatment each woman had received. Both treatments worked well overall (97.5% of women improved in each group), but the pattern of improvement differed. Ibuprofen relieved pain faster in the first month, as expected for a direct pain reliever. The herbal treatment started more slowly but kept improving month after month, and by the third month the two treatments were statistically equivalent on both pain and symptom scores. The most striking difference came after treatment stopped: only about 13% of the herbal-treatment group had their pain return the following month, compared to about 90% of the ibuprofen group. No side effects were reported in either group throughout the study. The researchers suggest this gap in relapse rates may reflect a real difference in how the two approaches work -- ibuprofen blocks pain-causing chemicals only while it is being taken, whereas the herbal protocol may produce a more lasting change. However, because patients and treating doctors could not be kept unaware of which treatment they were giving or receiving (an inherent challenge when comparing herbal decoctions to a standard pill), and because the study involved one hospital and a single follow-up cycle, the authors call for larger, multi-site studies with longer follow-up to confirm these findings.

Zhiyong Long et al. (2023) · Frontiers in immunology

Whether the plant compounds often discussed for rheumatoid arthritis — turmeric, green tea, pomegranate, garlic — actually do anything is the question this meta-analysis set out to answer. This review gathered every randomized trial it could find on the question: 47 trials, nearly 3,900 people, fifteen different plant polyphenols, from Iran, China, Korea, Egypt, Japan, Brazil, India and the United States. The clearest picture came from two of them. The first is total glucosides of paeony, an extract of Chinese peony root that is a licensed prescription medicine in China. Twenty-three trials tested it — always added to standard RA drugs like methotrexate, never instead of them. Disease activity scores came down, and so did CRP, ESR and rheumatoid factor, the blood markers doctors track. The most interesting result: people taking it reported *fewer* side effects than people on the standard drugs alone. That fits how it is used clinically — it appears to soften the toll the conventional drugs take on the liver and stomach. The second is curcumin, the yellow compound in turmeric. Five trials, and the same direction: lower disease activity, lower inflammatory markers, no extra side effects. Green tea polyphenols looked promising across two trials. Saffron did not show a clear effect. Everything else — pomegranate, garlic, resveratrol, sesame, cinnamon, ginger, kudzu, cranberry, olive oil, quercetin — rests on one or two small trials apiece, which is encouraging but not yet evidence that bears weight. The honest caveat, which the authors state plainly themselves: the trials disagreed with each other a great deal, most were small, and when the researchers sliced the data by dose and duration some of the headline benefits faded. Nearly all of these were add-on studies. Nobody tested a polyphenol against methotrexate, so the evidence says nothing about replacing a prescribed medication. What it does support is turmeric and peony extract as the best-evidenced candidates, studied as additions to existing treatment rather than replacements for it.