Description
Bi Yun San (Blue Cloud Powder), from Golden Mirror of the Medical Tradition (Yi Zong Jin Jian).
Actions: Dispel wind and dissipate cold, and unblock the orifices
Indications: Indicated for the treatment of stuffy nose, with repeated nasal obstruction of one side or both sides, loss of or impaired ability to smell, clear nasal discharge, aggravated by wind-cold, bitter taste in the mouth, aversion to wind-cold, pale tongue with thin and white coating, and floating pulse
Category: Formulas that Release the Exterior with Acrid-warm Medicinals.
Source: Xi S, Gong Y. Essentials of Chinese Materia Medica and Medical Formulas: New Century Traditional Chinese Medicine. Academic Press/Elsevier, 2017, pp. 427–429.
Composition
| Herb | Amount | % | Role | Function |
|---|---|---|---|---|
|
Chuan Xiong
as printed: Rhizoma Chuanxiong (chuan xiong) 30 g
|
30g | 40% | — | |
|
E Bu Shi Cao
as printed: Herba Centipedae (e bu shi cao) 30 g
|
30g | 40% | — | |
|
Xi Xin
as printed: Radix et Rhizoma Asari (xi xin) 6 g
|
6g | 8% | — | |
|
Xin Yi (Hua)
as printed: Flos Magnoliae (xin yi) 6 g
|
6g | 8% | — | |
|
Qing Dai
as printed: Indigo Naturalis (qing dai) 3 g
|
3g | 4% | — |
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 warm (+0.88)
From 100% of the weighed grams.
Grams by band: cold 4%, warm 96%.
Small but decisive: Qing Dai 3g (cold, 4% of the grams). Dose weighting nearly cancels a herb this small, but it may be what the formula is for.
Taste
- pungent 96%
- salty 4%
From 100% of the weighed grams.
Channels reached
- Liver 84%
- Lung 60%
- Pericardium 40%
- Gallbladder 40%
- Stomach 8%
- Heart 8%
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
Grind them together into crude powder; decoct 15 g powder each time with water for oral use. If as a decoction, the dosage should be reduced according to the original proportion
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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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