Xuan Bai Cheng Qi Tang
Star宣白承气汤 (Disseminate the White and Order the Qi Decoction)
Source: Systematic Differentiation of Warm Pathogen Diseases (1798)
Last updated October 1, 2026
Description
Xuan Bai Cheng Qi Tang (Disseminate the White and Order the Qi Decoction), from Systematic Differentiation of Warm Pathogen Diseases (1798).
Associated formula of Da Cheng Qi Tang.
Actions: Drains heat clumping downward; Disseminates the Lung qi; Transforms phlegm
Usage: Yang brightness warm pathogen disorder with Intestinal heat clumping plus phlegm-heat in the Lungs: afternoon tidal fever, constipation, acute wheezing, stifling chest, copious sputum, thick greasy yellow coating, submerged slippery rapid pulse.
Category: Formulas that Purge Heat Accumulation.
Source: Scheid V, Bensky D, Ellis A, Barolet R. Chinese Herbal Medicine: Formulas & Strategies, 2nd ed. Eastland Press, 2009, p. 68.
Composition
| Herb | Amount | % | Role | Function |
|---|---|---|---|---|
|
Shi Gao
as printed: Gypsum fibrosum (shi gao) 15g
|
15g | 42.86% | — | |
|
Da Huang
as printed: Rhei Radix et Rhizoma (da huang) 9g
|
9g | 25.71% | — | |
|
Xing Ren
as printed: Armeniacae Semen (xing ren) 6g
|
6g | 17.14% | — | |
|
Gua Lou Pi
as printed: Trichosanthis Pericarpium (gua lou pi) 5g
|
5g | 14.29% | — |
Energetics dose-weighted
The formula's overall nature, taste balance and channel reach, weighted by each herb's dose. Classical formulas often pair warm and cool herbs on purpose, so a net figure summarises the mix — it doesn't describe every herb in it.
Nature
Net cool (-1.49)
From 100% of the weighed grams.
Grams by band: cold 83%, warm 17%.
Taste
- pungent 21%
- sweet 29%
- bitter 50%
From 100% of the weighed grams.
Channels reached
- Stomach 83%
- Lung 74%
- Large intestine 43%
- Spleen 26%
- Pericardium 26%
- Liver 26%
Share of the grams entering each channel, from 100% of the weighed grams.
Dose-weighted from each herb's recorded nature, taste and channels (missing values are left out, never counted as neutral). It describes the composition — it is not a recommendation.
Preparation
Decoct in 5 cups water to 2; drink 1 cup, the second only if the bowels do not move.
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Match score combines dosage-weighted composition (cosine, 70%) with shared-herb overlap (Jaccard, 30%).
Traditional formula information is for educational purposes only. Herbal formulas should be prescribed by a qualified practitioner — dosages and combinations are individualized and can interact with medications.
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