Abstract: In order to evaluate the toxicity of Wu Jin granules for the guidance of clinical treatment, the acute and sub-chronic toxicity were assessed in KM mice and Wistar rats, respectively.The results of acute toxicity test suggested that the LD₅₀ of Wu Jin granules was >40 g/(kg·BW), maximal tolerance dose was 160 g/(kg·BW), equivalent to 80 times of clinical dosage.In sub-chronic toxicity test, the growth and general behavior of the animals appeared normal.Compared with the control group, weight gain and feed consumption of Wistar rats in the treatment groups had no significant difference (P>0.05).In high dose group, serum bilirubin (T-BIL), total protein (TP), albumin (ALB), urea nitrogen (BUN) and creatinine (CREA) of female Wistar rats, whereas CREA levels and liver index of male Wistar rats were significant difference (P<0.05), and the differences in other indexes were not significant (P>0.05); Hematological indexes, biochemical indexes of blood and organ index of Wistar rats in low dose group and medium dose group were not significantly different compared to the control group (P>0.05).Pathological examination results showed that mild granular degeneration existed in liver of Wistar rats in high dose group, whereas appeared clear and normal organizational structure of liver in Wistar rats in other groups.Wu Jin granules could inhibit intake of free bilirubin and hepatic synthesis protein in high dosage, whereas this results were not observed in other groups.Thus, the Wu Jin granules were safe in clinical treatment.

Key words: Wu Jin granules; acute toxicity; sub-chronic toxicity; safety evaluation