By Eric Brand When most Chinese medicine practitioners think of bing lang (betel nut), we think of a dried cross section of a seed that is used to kill parasites, downbear qi, and disinhibit urination. Few practitioners know that betel nut is also c… more »

By Eric Brand Here is an interesting article from Taiwan on Du Huo Ji Sheng Tang. The article assesses several products on the market for the presence of aristolochic acid (AA), which would come from the presence of Xi Xin in Du Huo Ji Sheng Tang.… more »