Toxicologic Study on Ke'erxing Capsules

Objective: To observe the acute toxicity of Ke'erxing Capsules (KC) in mice and its long-period toxicity in rats. Methods: The maximal tolerance dose was tested by gastric infusion of single oral dose of KC. Three groups of rats (in high, moderate and low dosage of KC) were administered with repeated gastric infusion of KC for 8 weeks. Body weight, hematological and hematobiochemical parameters, coefficient and histomorphological figure of organs (the heart, liver, spleen, lungs, kidneys, adrenals, testes, prostate, pancreas, uterus, brain, thymus) were examined in 8 weeks and 2 weeks after the cessation of KC. Results: The oral maximal tolerance dose of KC in mice was more than 4000 mg/kg (equal to 600 times of clinical dose). General conditions were changed and the body weight was increased slowly in high-dosage group. The coefficient of prostate was increased in high-dosage group and moderate-dosage group and recovered to normal 2 weeks after stopping the drug. Conclusion: KC has a certain effect on mice and rats but the effect was reversible.