This formula is a modification of Li Dong-yuan’s Huang Qi Ren Shen Tang as found in the Pi Wei Lun (Treatise on the Spleen & Stomach). It may also be referred to as a combination of Bu Zhong Yi Qi Tang (Supplement the Center & Boost the Qi Decoction) plus Yu Ping Feng San (Jade Wind-screen Powder) with added ingredients. Our version is a 10:1 extract.
For more information about the Chinese medical prevention and treatment of allergic rhinitis, see Bob Flaws’s Curing Hayfever Naturally with Chinese Medicine published by Blue Poppy Press.

