Ban Xia Xie Xin Tang (Pinellia Decoction to Drain the Epigastrium)

Actions

Indications

Western Uses:

• What conditions is Ban Xia Xie Xin Tang used for in modern practice?

  Ban Xia Xie Xin Tang harmonises a tangled heat-and-cold disharmony of the stomach and intestines — epigastric fullness (focal distention), nausea, reflux and loose stools — and is referenced for several upper-digestive conditions: acute gastroenteritis, chronic gastritis, chronic hepatitis, early-stage cirrhosis, and acid hypersecretion contributing to gastric ulcers.

  The formula is selected for the mixed heat-cold disharmony pattern, not against a diagnosis. Persistent epigastric pain, reflux, or a change in digestion warrants medical assessment (gastritis and ulcers are often linked to H. pylori and need testing/treatment), and liver disease requires medical diagnosis and monitoring. Traditional-use correlates only, not a treatment claim.

  Source: Sacred Lotus sources & references (pattern) + Bensky & Barolet, Formulas & Strategies; biomedical correlates as reference only. Not medical advice.

Originally Appeared In:

• On Cold Damage (Shang Han Lun)

Notes:

• How does Ban Xia Xie Xin Tang differ from Sheng Jiang Xie Xin Tang and Gan Cao Xie Xin Tang?

  Ban Xia Xie Xin Tang is one of three closely related “Xie Xin Tang” formulas from the Shang Han Lun that share the same seven-herb skeleton but shift the lead ingredient to match a slightly different variant of the same mixed cold-heat pi pattern. All three arose from the same clinical scenario: a Shaoyang-stage disorder mistakenly purged, damaging Spleen-Stomach qi and trapping cold and heat together in the middle jiao.

  • vs Sheng Jiang Xie Xin Tang (Fresh Ginger Decoction to Drain the Epigastrium): reduces Gan Jiang and adds a larger dose of fresh Sheng Jiang, shifting emphasis toward a pi with more pronounced fluid accumulation — watery, foul-smelling belching, borborygmus, and diarrhea from food and fluid stagnating alongside the qi disorder.
  • vs Gan Cao Xie Xin Tang (Licorice Decoction to Drain the Epigastrium): increases Zhi Gan Cao to the leading dose, for a case where repeated (rather than single) mistaken purgation has more severely depleted middle qi, producing more pronounced diarrhea, restlessness, and a more agitated presentation.
  • vs Xie Xin Tang / San Huang Xie Xin Tang (Da Huang, Huang Lian, Huang Qin): despite the shared “Xie Xin Tang” name, this is a structurally unrelated, purely bitter-cold purgative formula for reckless heat-forced bleeding or damp-heat pi, with no qi-tonifying herbs and no Ban Xia — it addresses pure excess heat, not the mixed cold-heat, deficiency-tinged pattern this formula treats.

  Classical source: Shang Han Lun (Treatise on Cold Damage), attributed to Zhang Zhongjing, Han dynasty — the formula appears in the discussion of pi (focal distention) following mistaken purgation of a Shaoyang-stage disorder.

  Source: formula-family differentiation cross-referenced against multiple online sources and Bensky & Barolet, Formulas & Strategies; classical attribution from the Shang Han Lun.

Clinical Studies & Research:

• Is there modern research on Ban Xia Xie Xin Tang?

  Yes — Ban Xia Xie Xin Tang (Banxia Xiexin Decoction) is one of the more extensively studied classical formulas, with a 2025 review identifying 11 categories of clinical application, plus recent clinical and mechanistic studies in gastrointestinal disease. Most modern research centers on gastritis, functional dyspepsia, and other upper-GI conditions consistent with its traditional epigastric-pi indication, alongside newer exploratory work in oncology.

  • Clinical and pharmacological review: a 2025 review of literature from 1997–2024 across multiple databases identified 11 major categories of clinical application for the formula, with chronic gastritis, functional dyspepsia, and inflammatory bowel disease among the most studied (PMID 40102869; PMC 11921579; DOI 10.1186/s13020-025-01087-0).
  • Advanced colorectal cancer (multicenter placebo-controlled trial): a 2026 multicenter trial of a modified Banxia Xiexin Decoction alongside standard chemotherapy reported extended progression-free and overall survival, improved disease control, and reduced tumor markers versus placebo, with accompanying preclinical work supporting an anti-tumor mechanism (PMID 41619866; DOI 10.1016/j.jep.2026.121292).
  • Gastric precancerous lesions (preclinical, mechanism): in a chemically induced rat model, the decoction reduced inflammatory cytokines (TNF-α, IL-1β, IL-6) and restored beneficial gut bacteria such as Lactobacillus, consistent with a gastric-microbiota-modulating mechanism (PMID 41722877).

  Sources: PMID 40102869 (PMC 11921579, DOI 10.1186/s13020-025-01087-0); PMID 41619866 (DOI 10.1016/j.jep.2026.121292); PMID 41722877. Research context on modern gastrointestinal and oncology study, not a therapeutic claim for the formula's classical pi indication specifically; the colorectal-cancer trial used a modified formula alongside chemotherapy, not the classical seven-herb prescription alone.