Study on the Quality Standard for Tiandijing Pills / 中国药师

ABSTRACT

Objective:To establish the quality standard for Tiandijing pills. Methods:A microscopic method was used to identify the crush herbs. TLC was performed to identify Rhizoma Polygonati and Fructus Ligustri Lucidi. HPLC was used to determine the con-tent of gastrodine. Results:The microscopy could identify earthworm and Acorus tatarinowii. The identification characteristics by TLC were distinct and highly specific. Gastrodine could be determined in HPLC. The linearity of gastrodine was good within the range of 19. 80-158. 40 μg·ml-1(r=1. 000 0). The average recovery of gastrodine was 98. 33% (RSD=0. 45%, n=6). Conclusion:The methods of identification and quantification are simple and reproducible, which can be used for the quality control of Tiandijing pills.