Dang Shen syndromes

Dang Shen is sweet and neutral. It primarily enters the Spleen meridian. It can be used as deputy in an exterior syndrome when the Qi is too weak to eliminate the exterior pathogenic factors. It can tonify the Spleen-Qi so as to strengthen the Lung-Qi and Defensive-Qi, and accelerate the speed of eliminating the exterior pathogenic factors. 

Dang Shen is used in conditions where the Qi is too weak to pit its efforts against the pathogenic heat, the Stomach-heat syndrome lingers and recovery takes a long period of time. 

Bai Zhu is warmer than Dang Shen but is bitter. The strong point of this herb is that it can either tonify the Qi or dry dampness. It can also treat the cause and manifestations of phlegm. It is often selected to treat damp-phlegm syndrome. 

Dang Shen and Huang Qi can effectively tonify the Qi and strengthen the muscles Dang Gui and Bai Shao Yao can tonify the blood. They are often selected in the condition of Wei syndrome when the muscles are thin and weak. They are also selected in the formula to treat chronic Bi syndrome in the condition of deficiency of Qi and blood. They are also often used in elderly people or people with a weak constitution. 

Ren Shen tonifies the Qi, Dang Gui tonifies the blood and Wu Wei Zi stabilizes the Heart-Qi. They consider the Qi and blood conditions in the pathological development of the syndrome of Yin deficiency. 

Moreover, the selection of Xuan Shen, Dang Gui and Bai Shao Yao enriches the treatment strategies by considering the relationship of the Lung, Kidney and Liver in the syndrome. 

---