Herbs that Tonify Qi
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Which of the following herbs tonifies original qi to treat qi collapse, with such symptoms as lethergy, pale complexion, cold extremities, difficult breathing, and deep, weak pulse?
Ren Shen strongly tonifies yuan qi to treat qi collapse. It can be used alone for this purpose, as is Du Shen Tang (Unaccompanied Ginseng Decoction); or, in cases of severe cold, it is used with Zhi Fu Zi, as in Shen Fu Tang (Ginseng and Aconite Accessory Decoction).
Source: Bensky, D. (2004). Chinese Herbal Medicine: Materia Medica. Seattle, WA: Eastland Press. p. 710 [Q69]