Herb Formulas Notebook

Bai Tou Weng Tang

Pulsatilla Decoction


Author: Zhang Zhong-Jing, 張仲景

Year: c. 220

Source: Discussion of Cold Damage (Shang Han Lun, 傷寒論)


Category: Formulas that Clear Heat

Pattern: Jueyin Syndrome with Heat Toxins searing the Stomach and Intestines (Yangming)

Key Symptoms: Abdominal pain, tenesmus, burning sensation around the anus, thirst
Secondary Symptoms: Diarrhoea containing more blood than pus

Tongue: Red body with yellow coat
Pulse: Wiry and rapid, slippery, rapid and forceful
Abdomen: No rebound tenderness


Ingredients

Bai Tou Weng 12-15g
Huang Lian 4-9g
Huang Bai 9-12g
Qin Pi 9-12g


Preparation: Decoction.


Actions: Clears Heat, resolves toxicity, cools the Blood, alleviates dysentery



Notes:
One liang is taken as 3g in modern sources but in Eastern Han times it was equivalent to 13.875g. This means that the dosages in classical formulae could have been more than 4x what is given today making them far higher than recommended safe dosages today but prompts consideration of what an effective dose may be (He, 2013).



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These pages are intended to assist clinicians and are not intended for self-diagnosis or treatment for which a qualified professional should be consulted.