Gan Sui

Gan Cao (Glycyrrhizae radix) is incompatible with Gan Sui (Euphorbiae kansui radix), Da Jl (Knoxiae radix), Yuan Hua [Genkwa flos) and Hai Zao (Sargassum)... 

Yuan Hua is the most poisonous herb and Gan Sui the least poisonous. 

Gan Sui drives out the fluid from the meridians, Da Ji from the internal organs and Yuan Hua from the joints and cavities. 

Qian Niu Zi is bitter, cold and poisonous, and enters the Lung, Kidney and Large Intestine meridians. It can purge accumulation from the intestines and treat constipation, as well as drive out water accumulation and treat edema. It can eliminate phlegm and open up the San Jiao meridian. Although less poisonous than Da Ji, Yuan Hua and Gan Sui, it is still a very harsh herb. 

The chief herbs are Da , Gan Sui and Yuan Hua. They strongly drive out the congested water. 

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