Yan Hu Er Hao
Star延胡二号 (Corydalis Formula Two)
Source: An Hui Zhong Yi Xue Yuan (1990)
Last updated October 1, 2026
Description
Yan Hu Er Hao (Corydalis Formula Two), from the An Hui Zhong Yi Xue Yuan (Anhui University School of Medicine) — a variation of Jin Ling Zi San.
Actions: Activates qi and blood circulation; Relieves pain.
Presentation: Pain from qi and blood stagnation, especially in the extremities.
Composition: No doses printed.
Source: Chen JK, Chen TT. Chinese Herbal Formulas and Applications: Pharmacological Effects & Clinical Research. Art of Medicine Press, 2009, p. 826.
Composition
| Herb | Amount | % | Role | Function |
|---|---|---|---|---|
|
Yan Hu Suo
as printed: Yan Hu Suo (Rhizoma Corydalis)
|
g | — | — | |
|
San Leng
as printed: San Leng (Rhizoma Sparganii)
|
g | — | — | |
|
E Zhu
as printed: E Zhu (Rhizoma Curcumae)
|
g | — | — | |
|
Gui Zhi
as printed: Gui Zhi (Ramulus Cinnamomi)
|
g | — | — | |
|
Dang Gui
as printed: Dang Gui (Radix Angelicae Sinensis)
|
g | — | — |
Relationships
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Formula family
Full herb lists
- Ji Tong Tang = this formula + Shao Yao Gan Cao Tang + Che Qian Zi, Chuan Niu Xi, Chuan Xiong, Dan Shen, Du Zhong, Shen Jin Cao, Yi Yi Ren and Ze Xie
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
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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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