A "wen-zhong bu-xu" (warm the middle and tonify deficiency) formula from Zhang Zhongjing's "Treatise on Cold Damage" (c. 200 CE), the "minor" sibling of the larger Da Jian Zhong Tang.
Cultural reference - how this formula has been discussed in Chinese medical tradition. Not medical advice.
Background & origin
Compiled by Zhang Zhongjing in the "Treatise on Cold Damage" (《伤寒论》) around 200 CE, the "minor construct center" formula is essentially Gui Zhi Tang plus a large dose of maltose (yitang). In Japan, it is sold as 小建中湯 (しょうけんちゅうとう / Shōkenchū-tō) by Tsumura (ツムラ) and is one of the most commonly prescribed kampo formulas in pediatrics, often used for "weak, cold-bellied" children. In Korea, similar "소건중탕" preparations appear in the Kyungdong (경동) and other hanbang pediatric lines. The formula is a clear example of the Tang-dynasty "middle-jiao warming" tradition as it survives in modern Japanese and Korean pediatric practice.
From the source text
This page is cultural documentation, not medical advice.
From the source text · 卷三·辨太阳病脉证并治中·第 102 条
Classical text
伤寒，阳脉涩，阴脉弦，法当腹中急痛，先与小建中汤；不差者，小柴胡汤主之。
Modern Chinese rendering
伤寒见寸口阳脉涩、尺中阴脉弦，按理应当腹中拘急疼痛的，先用小建中汤温中补虚以缓急止痛；若服药后仍不愈者，再用小柴胡汤和解少阳以治其本。这是"先补后和"思路下的代表性条文：里虚寒证用甘温之小建中汤先建中焦，再用小柴胡汤解少阳之邪。
Editorial translation
In a cold-damage pattern, when the yang pulse at the inch position is choppy and the yin pulse at the cubit position is wiry, the rule is that there will be acute and urgent pain in the abdomen, and Minor Construct Center Decoction is given first. If there is no improvement, Minor Bupleurum Decoction is the formula of choice. This is the canonical clause for the "tonify first, harmonize later" line of reasoning: when there is an interior deficiency-cold pattern, the sweet-warming Minor Construct Center Decoction is used to first build the middle jiao, and Minor Bupleurum Decoction is then used to resolve the lingering shaoyang pathogen.
In tradition
In TCM framing, traditionally used in the context of "middle-jiao deficiency-cold", vague abdominal pain that is relieved by pressure and warmth, occasional palpitations, mild night-time distress, a sallow complexion, and a tendency to feel cold easily. The formula is "minor" (xiao) only in name, it is one of the most widely used pediatric and family formulas for "weak, cold belly" presentations. In Japan, it is sold as 小建中湯 (Shōkenchū-tō) by Tsumura (ツムラ) and is one of the most commonly prescribed kampo formulas in pediatrics.
Formula composition
Monarch1
- Maltose (Yí Táng / 饴糖) — warms and tonifies the middle
Minister2
- Cinnamon twig (Guì Zhī / 桂枝) — warms the middle, releases the exterior
- White peony root (Bái Sháo / 白芍) — softens the liver, alleviates abdominal pain
Assistant3
- Ginger (Shēng Jiāng / 生姜) — warms the middle
- Chinese date (Dà Zǎo / 大枣) — nourishes the middle
- Honey-fried licorice (Zhì Gān Cǎo / 炙甘草) — harmonizes and alleviates pain
International availability
Cautions & context
- Not appropriate for active "damp-heat" or "food stagnation" presentations with a thick yellow tongue coating, the formula is described as sweet-warming and tonifying.
- Diabetic patients should use with caution, maltose (yitang) is a concentrated sugar and the principal ingredient.
- Not recommended for acute abdominal pain with fever or suspected obstruction, TCM tradition warms the "middle" only after acute conditions are ruled out.
- Persistent abdominal pain, especially with weight loss, blood in stool, or fever, should be evaluated by a clinician, TCM self-care is not a substitute for evaluation of GI conditions.
Related formulas
Other formulas from this text· "Treatise on Cold Damage"
Other formulas by this contributor· Zhang Zhongjing
Related concerns
Concern · digestion
Digestion
Upper-abdominal heaviness, bloating, sour reflux, loose stools, traveler's stomach, and the aftermath of a meal that was richer, spicier, or larger than usual.
Concern · stress
Stress & Mood
Everyday tension, low mood, irritability, the sense of being "wound up but tired". The cluster of complaints that brings many Chinese adults to the family 中成药 drawer before they ever see a doctor.
Editorial note
Compiled from "Treatise on Cold Damage" (200).
Last reviewed: July 18, 2026
Three layers of evidence
Classical source
≈ 1800 years · "Treatise on Cold Damage" (200)
Pharmacopoeia indication
"Warm the middle and tonify deficiency, relax urgency and stop pain. Used for spleen-stomach cold deficiency: epigastric and abdominal pain that prefers warmth and pressure, noisy discomfort with acid regurgitation, reduced food intake, palpitations; gastric and duodenal ulcers with the above presentation."
Modern research status
As of 2026-07-18, a PubMed search using the formula name and the Latin / Korean / Japanese transliterations together with "systematic review" and "meta-analysis" did not identify a dedicated systematic review for this formula. Any clinical evidence that does exist is fragmented across small individual trials or covered in broad herbal-medicine umbrella reviews, which do not allow a per-formula evidence assessment; the absence of a dedicated SR is itself the relevant editorial fact here.
References
References reviewed on July 18, 2026 · PubMed search on 2026-07-18
- 01ClassicalZhang Zhongjing, 《伤寒论》 (Shānghán Lùn / Treatise on Cold Damage), Eastern Han dynasty, c. 200 CE, with the base formula appearing in clause 102 of the "taiyang" section, the canonical text for the "tonify first, harmonize later" line of reasoning when an interior deficiency-cold pattern is overlaid on a shaoyang disorder.
- 02TextbookDuan Fuqin (段富津) et al. (eds.), 《方剂学》 (Fāngjìxué / Textbook of Formulas), Shanghai Scientific and Technical Publishers, 1995, the standard modern university-level formula textbook in mainland China, with Xiao Jianzhong Tang analysed as the representative "warm the middle and tonify deficiency" formula for "deficiency-cold of the middle jiao" patterns.
- 03PharmacopoeiaChinese Pharmacopoeia Commission, 《中华人民共和国药典》 2020 年版一部 (Zhōnghuá Rénmín Gònghéguó Yàodiǎn, Pharmacopoeia of the People's Republic of China, 2020 Edition, Vol. I), China Medical Science Press, 2020, the official monograph for Xiao Jianzhong Tang / Xiao Jianzhong Pian dosage forms.