RESUMEN
Objective The research is about optimization of preparation procedure of self-microemulsifying dropping pills of paclitaxel (PTX-SM-DP) .The drug release in vitro of PTX-SM-DP was investigated .Methods The ratio of SMEDDS and bases ,dropping distance ,temperature and speed of dripping were investigated by using the orthogonal test .The weight differ-ence of dropping pill ,hardness and roundness were evaluated to optimize the preparation conditions of PTX-SM-DP .Dissolu-tion of vitro was determined .Results The optimal preparation conditions were as follows :the ratio of SMEDDS and bases was 1∶3 ,dropping distance was 15 cm ,temperature of dripping preparation was 80 ℃ and dripping speed was 30 drops/min . Conclusion The optimized technical condition is stable and feasible .PTX-SM-DP can improve paclitaxel dissolution .