Table 4.
Distribution frequencies* of the most commonly prescribed herbal formulae potentially containing aristolochic acid, 1997–2003
| Herbal formula containing AA herbs | Prescription frequency | Type of AA herbs included or potentially adulterated | |
| Counts | % | ||
| 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 | |
*Distribution frequency refers to the top ten most commonly prescribed herbal formulae that may potentially contain aristolochic acid.