Qing Dai San
Star青黛散 (Indigo Naturalis Powder)
Source: Zhong Yi Wai Ke Xue Jiang Yi (1974)
Last updated October 1, 2026
Description
Qing Dai San (Indigo Naturalis Powder), from Teaching Materials of TCM External Medicine (Zhong Yi Wai Ke Xue Jiang Yi).
Actions: Eliminate dampness and relieve itching, clear heat and resolve toxins. Indicated for the treatment of skin diseases due to damp-heat, with scorching swelling, itch and pain of skin, and fluid effusion
Indications: Discontinue medication after the local affected skin is dry and forms a scab
Source: Xi S, Gong Y. Essentials of Chinese Materia Medica and Medical Formulas: New Century Traditional Chinese Medicine. Academic Press/Elsevier, 2017, pp. 861–873.
Composition
| Herb | Amount | % | Role | Function |
|---|---|---|---|---|
|
Qing Dai
as printed: Indigo Naturalis (qing dai) 60 g
|
60g | 25% | — | |
|
Huang Bai
as printed: Cortex Phellodendri Chinensis (huang bai) 60 g
|
60g | 25% | — | |
|
Shi Gao
as printed: Gypsum Fibrosum (shi gao)
|
g | — | — | |
|
Hua Shi
batch quantity as printed (stock for a pill/powder/plaster preparation), not a single dose; as printed: Talcum (hua shi) 120 g
|
120g | 50% | — |
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 cold (-2.00)
From 100% of the weighed grams.
Grams by band: cold 100%.
Taste
- sweet 25%
- bitter 25%
- salty 25%
- bland 25%
From 100% of the weighed grams.
Channels reached
- Stomach 50%
- Lung 25%
- Large intestine 25%
- Bladder 25%
- Kidney 25%
- Liver 25%
Share of the grams entering each channel, from 100% of the weighed grams.
1 herb without a dose in grams, so left out of every figure above: Shi Gao.
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 the ingredients into fine powder, mix evenly, directly rub it with the hands or mix with Oleum Sesami ( ma you ) and apply it on the affected area
Relationships
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Formula Network
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Similar Formulas by composition
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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