| Control | No zone | No zone |
| Acori Gramineri Rhizoma | 17.0 ± 0.8 | 11.6 ± 0.5 |
| Amomi Tsao-ko Fructus | 11.8 ± 1.0 | 7.5 ± 0.0 |
| Angelicae Tenuissimae Radix | 23.5 ± 0.6 | 7.0 ± 0.0 |
| Cinnamomi Cortex | 42.3 ± 2.1 | 22.3 ± 0.5 |
| Cinnamomi Ramulus | 16.3 ± 0.5 | 7.3 ± 0.3 |
| Cnidii Rhizoma | 20.5 ± 0.6 | 7.0 ± 0.0 |
| Cocculi Radix | 7.0 ± 0.0 | No zone |
| Flower of Rosa multiflora | 14.4 ± 0.5 | 10.3 ± 0.5 |
| Impatientis Semen | 23.5 ± 0.6 | 12.0 ± 0.8 |
| Magnoliae Cortex | 24.8 ± 0.5 | 12.5 ± 0.0 |
| Moutan Cortex Radicis | 12.5 ± 1.0 | 10.0 ± 0.0 |
| Phellodendri Cortex | 13.3 ± 1.5 | 9.3 ± 0.3 |
| Polygalae Radix | No zone | No zone |
| Rhizome of Kaempferia galangal | 17.3 ± 0.5 | No zone |
| Sanguisorbae Radix | 9.8 ± 1.0 | 9.8 ± 0.3 |
| Scutellariae Radix | 8.5 ± 0.6 | 8.9 ± 0.3 |
| Syzygii Flos | 21.5 ± 0.6 | 21.8 ± 1.0 |