Pinyin: Yú Gōng Sǎn
Other names: Yu's Achievement Powder
Number of ingredients: 3 herbs
Formula category: Formulas that drive out excess water
Conditions for which it may be prescribed: HydroceleNephritis with Edema
Contraindications: It should be taken with caution during pregnancy and in old or disabled... It should be taken with caution during pregnancy and in old or disabled patients due to its purgative effects. This is a formula for Excess disorders. see more
Source date: 1228 AD
Source book: Confucians' Duties to Their Parents
The information provided here is not a replacement for a doctor. You shouldn't use it for the purpose of self-diagnosing or self-medicating but rather so you can have a more informed discussion with a professional TCM practitioner.
Yu Gong San is a 3-ingredient Chinese Medicine formula with Morning Glory Seeds (Qian Niu Zi) as a principal ingredient.
Invented in 1228 AD, it belongs to the category of formulas that drive out excess water. Its main actions are: 1) expels water and and 2) reduces edema.
In Chinese Medicine health conditions are thought to arise due to "disharmonies" in the body as a system. These disharmonies are called "patterns" and the very purpose of herbal formulas is to fight them in order to restore the body's harmony.
From a Western Medicine standpoint, such patterns can give rise to a range of conditions such as nephritis with edema or hydrocele for instance.
On this page, after a detailed description of each of the three ingredients in Yu Gong San, we review the patterns and conditions that Yu Gong San helps treat.
Qian Niu Zi is a king ingredient in Yu Gong San. Like the name indicates, it means it has more power than other ingredients in the formula.
Part used: Seeds
Meridian affinity: KidneyLarge intestineLung
Category: Cathartic herbs that drain downward
Qian Niu Zi directs downward. It reduces Edema by promoting urination and driving out water by means of purgation.
Xiao Hui Xiang is a deputy ingredient in Yu Gong San. This means it helps the king ingredient(s) treat the main pattern or it serves to treat a coexisting pattern.
Part used: Dried ripe fruits
Meridian affinity: KidneyLiverSpleenStomach
Xiao Hui Xiang moves Qi and stops pain. Its warmth moderates the Cold nature of the key herb. Meanwhile, its acrid nature aids restoration of the normal Qi dynamic. Hence, it considerably strengthens the power of the formula to drive out Water.
Sheng Jiang is an assistant ingredient in Yu Gong San. This means that it either serves to reinforces the effect of other ingredients or it moderates their toxicity.
Part used: Fresh root
Meridian affinity: LungSpleenStomach
Sheng Jiang opens the pores and interstices to facilitate the Qi movement and the driving out of Water Dampness.
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