Abstract: Objective To discuss the effect of Yi Shen Wu Fa oral liquid on mice's acute toxicity. Methods The classical method of acute toxicity were used to study on mice's caused by Yi Shen Wu Fa oral liquid. Results Caculated by Yi Shen Wu Fa oral liquid, the MLD is 47.5g·kg-1·d-1, which is equal to 280.0 times of 70kg people's daily dried medicinal herb expenses. The main acute toxicity symptoms of mouse are negligent action, diarrhea and hypokinesia. Compared with the control group,The mice's body-weight gainings were slow after 6 day's administration, which gradually normal after 8 day's administration and there were no other obvious abnormalities. The serum concentration of ALT and AST, the liver-body ratio all increased after 2 hours' administration. Conclusion The mice's acute toxicity of Yi shen wu fa oral liquid could induce the liver injury although could not make the LD50 and MTD, and the mice did not appear dead. It demonstrated that the drug gavages certain dose to mice could cause obvious hepa-injury, which in accordance with the clinical ADR report.

Key words: Yi Shen Wu Fa oral liquid, mice, acute toxicity