Da Yuan Yin
Star达原饮 (Reach the Membrane Source Decoction)
Source: Wen Yi Lun — Wu You-Xing (1642)
Last updated October 1, 2026
Description
Da Yuan Yin (Reach the Membrane Source Decoction), from the Wen Yi Lun (Discussion of Epidemic Warm Disease) by Wu You-Xing — a variation of Chai Hu Da Yuan Yin.
Actions: Vents the mo yuan (membrane source) and eliminates dampness and turbidity (as described).
Presentation: Malaria and febrile disorders with pathogens at the mo yuan: irregular alternating fever and chills (every one to three days), chest oppression, nausea, vomiting, headache, irritability, restlessness, wiry rapid pulse, greasy tongue coating.
Source: Chen JK, Chen TT. Chinese Herbal Formulas and Applications: Pharmacological Effects & Clinical Research. Art of Medicine Press, 2009, p. 231.
Composition
| Herb | Amount | % | Role | Function |
|---|---|---|---|---|
|
Bing Lang
as printed: Bing Lang (Semen Arecae) 6g
|
6g | 28.57% | Jun (Chief) | — |
|
Hou Po
as printed: Hou Po (Cortex Magnoliae Officinalis) 3g
|
3g | 14.29% | Jun (Chief) | — |
|
Cao Guo
as printed: Cao Guo (Fructus Tsaoko) 1.5g
|
1.5g | 7.14% | Jun (Chief) | — |
|
Zhi Mu
as printed: Zhi Mu (Rhizoma Anemarrhenae) 3g
|
3g | 14.29% | Chen (Deputy) | — |
|
Bai Shao
as printed: Bai Shao (Radix Paeoniae Alba) 3g
|
3g | 14.29% | Chen (Deputy) | — |
|
Huang Qin
as printed: Huang Qin (Radix Scutellariae) 3g
|
3g | 14.29% | Chen (Deputy) | — |
|
Gan Cao
as printed: Gan Cao (Radix et Rhizoma Glycyrrhizae) 1.5g
|
1.5g | 7.14% | Shi (Envoy) | — |
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 neutral (-0.21)
From 100% of the weighed grams.
Grams by band: cold 29%, cool 14%, neutral 7%, warm 50%.
Pairs warm and cool. 50% of the weighed grams are warm or hot and 43% cool or cold — the net is their average, not the whole story.
Taste
- pungent 29%
- sweet 14%
- sour 7%
- bitter 50%
From 100% of the weighed grams.
Channels reached
- Stomach 86%
- Large intestine 57%
- Spleen 57%
- Lung 50%
- Heart 21%
- Small intestine 14%
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
Source: cook in 2 large bowls of water until 80% remains; take warm in the afternoon.
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Formula family
Full herb lists
- This formula = Shao Yao Gan Cao Tang + Bing Lang, Cao Guo, Hou Po, Huang Qin and Zhi Mu
Each entry reads as the larger formula written out: “+” adds its other catalogue cores, then the herbs none of them hold. A catalogue formula counts as a core only when at least 80% of its herbs are present, no more than 1 is absent, and the absent herb is not its chief.
Formula Network
Formulas that share herbs with this one — the closer to the centre, the stronger the match. Click a node to explore.
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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