Jiang Dan Tang
Star降氮汤 (Direct Nitrogen Downward Decoction)
Source: Fang Shu-Yuan, Shanghai Journal of Chinese Medicine and Pharmacology (1987) 3:19 (1987)
Last updated October 1, 2026
Description
Jiang Dan Tang (Direct Nitrogen Downward Decoction), from Fang Shu-Yuan, Shanghai Journal of Chinese Medicine and Pharmacology (1987) 3:19 (1987).
Associated formula of Da Huang Fu Zi Tang.
Actions: Drains downward; Pushes out toxins; Expels turbidity
Usage: Enema formula for uremia (one of several composed in the 1980s).
Category: Formulas that Warm and Purge.
Source: Scheid V, Bensky D, Ellis A, Barolet R. Chinese Herbal Medicine: Formulas & Strategies, 2nd ed. Eastland Press, 2009, p. 73.
Composition
| Herb | Amount | % | Role | Function |
|---|---|---|---|---|
|
Da Huang
as printed: Rhei Radix et Rhizoma (da huang) 20g
|
20g | 14.81% | — | |
|
Zhi Fu Zi
as printed: Aconiti Radix lateralis preparata (zhi fu zi) 15g
|
15g | 11.11% | — | |
|
Huang Qin
as printed: Scutellariae Radix (huang qin) 50g
|
50g | 37.04% | — | |
|
Mu Li
as printed: Ostreae Concha (mu li) 50g
|
50g | 37.04% | — |
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 (-1.19)
From 100% of the weighed grams.
Grams by band: cold 52%, cool 37%, hot 11%.
Taste
- pungent 6%
- sweet 6%
- bitter 52%
- salty 37%
From 100% of the weighed grams.
Channels reached
- Heart 85%
- Gallbladder 74%
- Spleen 63%
- Large intestine 52%
- Stomach 52%
- Liver 52%
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
Decoction; 150ml as an enema two to three times daily.
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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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