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Table 4 Distribution frequencies* of the most commonly prescribed herbal formulae potentially containing aristolochic acid, 1997–2003

From: Prescription profile of potentially aristolochic acid containing Chinese herbal products: an analysis of National Health Insurance data in Taiwan between 1997 and 2003

Herbal formula containing AA herbs Prescription frequency Counts % Type of AA herbs included or potentially adulterated
Shujing Huoxie Tang 75,472 14.3 Fangji
Chuanqiong Chadiao San 58,004 11.0 Xixin
Longdan Xiegan Tang 42,351 8.0 Mutong
Xiaoqinglong Tang 42,241 8.0 Xixin
Duhuo Jisheng Tang 41,594 7.9 Xixin
Xinyi San 39,323 7.5 Mutong
Xiangsha Liujunzi Tang 23,580 4.5 Muxiang
Guipi Tang 16,946 3.2 Muxiang
Xiaofeng San 16,186 3.1 Mutong
Zhenggu Zijin Dan 15,105 2.9 Muxiang
Total 526,867 100.0  
  1. *Distribution frequency refers to the top ten most commonly prescribed herbal formulae that may potentially contain aristolochic acid.