Table 1 Distribution frequencies of licensed and prescribed Chinese herbal products potentially containing aristolochic acid, 1997–2003*
| Â | Licensed CHPs Counts | % | Prescribed CHPs Counts | % |
|---|---|---|---|---|
Types of AA herbs included | ||||
   Tianxianteng | 1 | 0.1 | 339 | 0.1 |
   Madouling | 18 | 1.5 | 1,395 | 0.3 |
   Xixin | 307 | 25.2 | 191,297 | 36.3 |
Herbs potentially adulterated by AA herbs | ||||
   Fangji (by Guanfangji) | 174 | 14.3 | 93,447 | 17.7 |
   Muxiang (by Qingmuxiang) | 409 | 33.6 | 107,014 | 20.3 |
   Mutong (by Guanmutong) | 225 | 18.5 | 87,073 | 16.5 |
≥2 of above herbs | ||||
   Mutong and Muxiang | 17 | 1.4 | 2,200 | 0.4 |
   Mutong and Xixin | 63 | 5.2 | 44,101 | 8.4 |
   Muxiang and Xixin | 2 | 0.2 | - | - |
   Muxiang, Xixin and Tianxianteng | 2 | 0.2 | 1 | - |
Total | 1,218 | 100.0 | 526,867 | 100.0 |