Methods The dissolution rate of ultra-fine ERMIAO PILL with different granule diameters in vitro was measured and compared with the index of berberine by UV spectro-photometry.

• 方法采用分光光度法,以盐酸小檗碱为指标成分,考察普通粉与超细粉二妙丸及不同粒径的超细粉二妙丸微丸的体外溶出度。