Objective To Prepare and prefer method for the determination Wan Tong Yan Kang dripping pills. Methods Based on the Orthogonal test,the roundness and dissolution time were regarded as the index,the proportion of PEG4000 and PEG6000,the ratio of drug and matrix and material temperature were investigated. The pill weight pass rate (%)was regarded as the index to prepare dropping pills,the distance,dropping speed and temperature were investigated.Established isofraxidin content assay by HPLC. Results The best preparation method for drugs is:PEG4000 PEG6000 is 72,rugs:standard is1:4;the material temperature is 90 ℃;the cooling liquid temperature is 5 ℃;dropping distance is 10cm,dropping speed is 30 d/min. Isofraxidin regression equation is Y=26842X-835,R2 =0.998. Isofraxidin has good linear relationship in the range of concentrations 0.852-4.26 μg/mL. Conclusion The dripping pill preparation method is simple and feasible. Determination method has high sensitivity and good repeatability. The experiment provides a basis for the preparation of dripping pills and establishment of quality standards.

Objective To improve the content determination of eight-positive particles,and better control drug quality.Methods Gardenin, emodin and chrysophanol of eight-positive particles were determined by HPLC.Revised content determination standards and improved the standards of quality control. Results The revised content determinations of gardenin, emodin and chrysophanol were simple and feasible, and had high sensitivity.Conclusion Unification the quality standards of eight positive granules,the standards provide the basis for standardizing the market of eight-positive particles.