Herb Formulas Notebook

Gan Cao Xie Xin Tang

Licorice Decoction to Drain the Heart


Author: Zhang Zhong-Jing, 張仲景

Year: c. 220

Source: Essentials from the Golden Cabinet (Jin Gui Yao Lue, 金匱要略)


Category: Formulas that Harmonise

Pattern: Hu Huo Bing 狐惑病 - Fox Confusion Disease: sores in the mouth and around the anus or genitals

Key Symptoms: "Patients with Huhuo Disease 惑狐病 (literally Fox Confusion by Enchantment Disease) exhibit symptoms that are not unlike feverish diseases: listless depression with a desire to sleep, but not being able to close the eyes, and restlessly getting up and laying down again. A worm afflicting the throat is called Huo (vermin), and a worm afflicting the anus and genitals is called Hu (fox)." trans. Heiner Fruehauf (2010)
Secondary Symptoms: "Patients typically have no desire to eat or drink, express an aversion to the smell of food or unpleasant odors, and their face color changes from red to dark to white. If the worm is afflicting the upper part, patients may experience loss of voice." (ibid.)


Ingredients

Gan Cao 12g
Zhi Ban Xia 9-12g
Gan Jiang 9g
Huang Qin 9g
Huang Lian 3g
Ren Shen 9g
Da Zao 4pc


Preparation: Decoction. Boil the ingredients in 2000 ml of water until 1200 ml remains, strain and boil again until 600 ml remains. Divide into 200 ml doses and administer 3x per day when warm.


Actions: Clears Heat, resolves toxicity and disperses clumping, expels Cold



Notes:
This formula differs from Gan Cao Xie Xin Tang from the Shang Han Lun in that it uses fresh Gan Cao in order to resolve toxicity rather than tonify the middle.

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Used a lot in Japan for sleep disorders including difficulty falling asleep, dream-disturbed sleep, talking in one's sleep and somnabulism following the indication in the Essentials from the Golden Cabinet.

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Foxes were thought to be magical shape-shifting creatures which could enchant people to become obsessed with their beauty.

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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.