目的 制备雷公藤红素缓释滴丸，考察药物的分散状态和体外释放度，优化制备工艺。方法 以聚乙二醇4000（PEG 4000）和单硬脂酸甘油酯（GM）为载体材料，采用固体分散体方法制备雷公藤红素缓释滴丸，以圆整度和质量差异为评价指标，采用正交试验考察滴丸成型的影响因素。结果 经过优化缓释滴丸处方以雷公藤红素、GM和PEG 4000按质量比1∶3∶7组成，药料温度80 ℃，滴速20滴/min，滴距5 cm，冷凝液温度15 ℃。缓释滴丸中药物以非晶形存在，该缓释滴丸12 h的最大累积释放率可达91.2%。结论 所制得的雷公藤红素缓释滴丸具有良好的缓释效果。

Objective To prepare the Tripterin Sustained-release Dropping Pills (TSRDPs), investigate the disperse state and in vitro release, and optimize the preparation technology. Methods The TSRDPs were prepared by solid dispersion method with PEG 4000 and glycerol monostearate (GM) as carrier materials. Orthogonal design was conducted to explore the influencing factors of the preparation technology by evaluating the indexes of roundness and weight difference. Results The ideal condition of TSRDPs: the ratio of tripterin-GM-PEG 4000 was 1∶3∶7; the temperature of drug mixture was 80 ℃; dropping speed was 20 d/min; dropping distance was 5 cm; and the condensate temperature was 15 ℃. Tripterin existed as amorphous state in carriers. The maximum cumulative release amount of tripterin was 91.2% at 12 h. Conclusion The prepared TSRDPs have a good sustained-release effect.

江苏省中医药领军人才专项（2006贾晓斌）；江苏省高等学校大学生创新训练计划项目（011042004000）