Comparing Treatment Approaches in UC: What a 2026 Network Meta-Analysis Found About Adding Traditional Chinese Medicine to Conventional Therapy

Ulcerative colitis is a long-term inflammatory bowel condition that causes recurring inflammation and ulcers in the colon and rectum. Typical symptoms include diarrhoea that may contain blood or mucus, abdominal pain and cramping, and an urgent and frequent need to have a bowel movement (NHS: Ulcerative colitis). For many people living with UC, controlling these symptoms is a daily challenge, and a significant proportion wonder whether approaches beyond conventional pharmaceutical therapy might add benefit.

A 2026 network meta-analysis published in Frontiers in Pharmacology set out to answer that question systematically. By pooling 46 randomised controlled trials and comparing seven distinct treatment regimens including various combinations of traditional Chinese medicine (TCM) and conventional pharmaceutical therapy, the study provides the largest structured comparison available on this question. The results are worth looking at carefully, because the headline finding and the details point in somewhat different directions.

What the Study Did

Researchers Li Xue and Sha Zhiya searched seven medical databases for randomised controlled trials through June 2025. They identified 46 eligible trials enrolling a combined total of 3,763 patients with ulcerative colitis. Using network meta-analysis methodology, which allows indirect comparisons across regimens even when they have not been directly compared head-to-head in a single trial, the team evaluated seven distinct intervention approaches (Li X, Sha Z, Front Pharmacol, 2026):

• Conventional medicine (CM) alone
• Traditional Chinese medicine (TCM) decoctions alone
• CM combined with TCM decoctions
• CM combined with acupoint catgut embedding (a type of acupuncture technique)
• CM combined with both TCM decoctions and acupoint catgut embedding
• TCM decoctions combined with acupoint catgut embedding
• Other combined approaches

The primary outcomes included a composite "total effectiveness rate," as well as separate assessments of diarrhoea control, abdominal pain relief, reduction in inflammatory markers, cytokine levels (interleukins IL-6 and IL-10), disease activity scores, and mucosal healing.

What the Rankings Showed

Composite outcome (total effectiveness rate): On this combined measure, the network ranking placed CM combined with TCM decoctions plus acupoint catgut embedding at the top among all seven regimens evaluated.

Diarrhoea and abdominal pain: When the analysis separated out these two outcomes, which are what most patients with UC experience as their most disruptive daily symptoms, conventional medicine alone ranked highest of all seven regimens. This finding sits in tension with the composite ranking and is clinically important: the approach most patients are already on was the top performer for the symptoms they are most likely to want controlled.

Inflammatory markers: For reductions in measures of systemic inflammation, conventional medicine alone again ranked highest.

Cytokine outcomes: Different combination regimens ranked highest for specific immune signal reductions. Combinations achieved higher rankings for IL-6 and IL-10 modulation than CM alone.

Disease activity scores and mucosal healing: The meta-analysis found insufficient evidence to make confident comparisons across the seven regimens for these two outcomes. Mucosal healing, which refers to the normalisation of the gut lining visible on endoscopy, is increasingly recognised as an important treatment target in UC beyond symptom control. The evidence base pooled in this review was not sufficient to answer whether any of the seven regimens showed a meaningful advantage here.

Why This Matters: Understanding the Nuance

The authors conclude that "combined use of traditional Chinese and conventional medicine in the treatment of ulcerative colitis demonstrates greater overall efficacy" compared to single-therapy approaches. That conclusion is driven primarily by the composite total effectiveness rate outcome.

However, several points are worth understanding before drawing conclusions from this:

The composite outcome and the symptom outcomes point in different directions. Total effectiveness rates in clinical research are composite scores that aggregate multiple measurements into a single number. These metrics can be influenced by which components are included and how they are weighted. When the researchers separated out the individual outcomes that most directly affect quality of life, such as diarrhoea control and pain relief, conventional medicine alone was the top-ranked approach.

The most important long-term treatment target, mucosal healing, is unanswered. Modern UC management increasingly targets not just symptom control but endoscopic remission, where the inflamed gut lining heals completely. For this outcome, the evidence base pooled in this meta-analysis was insufficient for meaningful comparison. This is a significant gap.

Network meta-analysis is a powerful but indirect tool. Pooling 46 trials allows estimation of comparisons that were never directly tested in a single study. But this approach introduces uncertainty that direct head-to-head trials do not have. The quality of the pooled evidence base is determined by the quality of the constituent trials, and TCM research faces recognised methodological challenges around blinding, standardisation of herbal formulations, and outcome measure consistency.

The authors call for more research. The paper advocates explicitly for additional high-quality clinical trials to fill the evidence gaps, particularly around clinical scores and mucosal healing.

What the Evidence Does and Does Not Say

A 2026 network meta-analysis comparing 7 regimens across 46 trials and 3,763 patients is a meaningful contribution to the evidence base. The finding that some combined TCM-plus-conventional approaches may produce higher composite effectiveness scores than single-drug conventional therapy is worth noting as a research signal.

At the same time, the finding that conventional medicine alone ranked first for diarrhoea, abdominal pain, and inflammatory markers indicates that established treatment is doing what it is supposed to do on the outcomes patients most directly feel. The gap in evidence for mucosal healing means this comparison cannot be made.

TCM represents a broad category of approaches including herbal decoctions, acupuncture, and various physical techniques. Formulations vary, quality control across studies varies, and what works in one setting may not transfer directly to another. Patients who are curious about whether specific complementary approaches have a role in their care should raise this with their gastroenterologist, who can consider individual circumstances, current medications, and potential interactions.

Sources

• Li X, Sha Z. "Systematic review and network meta-analysis of integrated traditional Chinese and conventional medicine for ulcerative colitis." Frontiers in Pharmacology. 2026. DOI: 10.3389/fphar.2026.1785134. PubMed 42428503
• NHS. "Ulcerative colitis." NHS.UK. NHS.UK