ABSTRACT
Objective: To study the acute toxicity of Xiaobai capsules in mice after intragastric administration .Methods: The mice were randomly divided into two groups , the treatment group and the control group .The treatment group was given Xiaobai cap-sules by gavage, 3 times daily.The acute toxicity was recorded, and the median lethal dose (LD50) and the maximum dose were deter-mined.Results:The maximum daily dose of Xiaobai capsules was 141.6 g· kg-1(equivalent to 211.3 times of the clinical dose).At the dose, the mice showed no toxicity without death in 14 days or changes in organs after the dissection .Conclusion:Xiaobai capsules have very low acute toxicity in mice after intragastric administration with high security .
ABSTRACT
To establish the quality standard for Xiaobai capsules. Methods: Paeoniae Radix Alba and Angelicae Sinensis Radix were identified by TLC. The contents of psoralen and isopsoralen were determined by HPLC. Results:The qualitative i-dentification was with high resolution and without interference from the negative substances. The linear range of psoralen was 1. 082-108. 200 μg·ml-1 . The average recovery was 99. 82% with RSD of 1. 16%. The linear range of isopsoralen was 0. 818-81. 800μg· ml-1 . The average recovery was 99. 85% with RSD of 1. 81%. Conclusion:The method can be used in the quality control of Xiaobai capsules.
