Si Miao Yong An Tang
Star四妙勇安汤 (Four-Valiant Decoction for Well-Being)
Source: Yan Fang Xin Bian — Bao Xiang-Ao (Qing, 1846)
Last updated October 1, 2026
Description
Si Miao Yong An Tang (Four-Valiant Decoction for Well-Being), from the Yan Fang Xin Bian (New Compilation of Time-Tested Formulas) by Bao Xiang-Ao.
Actions: Clears heat and eliminates toxins; Activates blood circulation and relieves pain.
Presentation: Gangrene: gangrene of the extremities with purulent abscess, dark red discoloration, local inflammation and swelling, a burning sensation, sometimes severe pain, possible fever, thirst, a red tongue body, and a rapid pulse.
Cautions:
- Source: avoid scratching the affected area while taking it
- For heat-toxin gangrene only; inappropriate for cold-type gangrene
- Insufficient alone when tissue necrosis is confirmed; surgery or amputation may be needed
Pharmacological effects reported:
- Analgesic: marked analgesia in mice starting 40 minutes after oral dosing
- Coagulation: no effect on coagulation or bleeding time in rabbits and mice
Source: Chen JK, Chen TT. Chinese Herbal Formulas and Applications: Pharmacological Effects & Clinical Research. Art of Medicine Press, 2009, p. 1344.
Composition
| Herb | Amount | % | Role | Function |
|---|---|---|---|---|
|
Jin Yin Hua
dose printed as 30-90g; as printed: Jin Yin Hua (Flos Lonicerae Japonicae) 90g [30-90g]
|
g | — | Jun (Chief) | large dose clears heat and eliminates toxins |
|
Xuan Shen
dose printed as 30-90g; as printed: Xuan Shen (Radix Scrophulariae) 90g [30-90g]
|
g | — | Chen (Deputy) | purges fire and eliminates toxins |
|
Dang Gui
dose printed as 15-30g; as printed: Dang Gui (Radix Angelicae Sinensis) 60g [15-30g]
|
g | — | Zuo (Assistant) | activates blood and disperses stagnation |
|
Gan Cao
dose printed as 10-15g; as printed: Gan Cao (Radix et Rhizoma Glycyrrhizae) 30g [10-15g]
|
g | — | Shi (Envoy) | assists Jin Yin Hua to clear heat and toxins; harmonizes |
Preparation
Decoction; the source emphasizes using all four herbs for a total of 10 packs. Today use bracketed doses.
Relationships
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Formula family
Full herb lists
- Qing Yan Shuang He Yin = this formula + Jie Geng Tang + Chi Fu Ling, Chi Shao, Chuan Bei Mu, Deng Xin Cao, Ge Gen, Jing Jie, Mu Dan Pi, Qian Hu and Sheng Di Huang
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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