ABSTRACT
This article was aimed to study the multicomponent in vivo releasing rules of Zuojin Gastric Floating Sus-tained-release Tablet. Stomach contents of rabbits were collected at different times and then prepared into solutions for the study. The HPLC was used to establish fingerprints of each time and fingerprints of completely dissolved samples. The in vivo releasing rates were calculated. The evaluation was made on releasing behaviors among index components as well as between index components and preparations. The results showed that within 10 h, the f2 of berberine and limonin, rutaecarpine, preparation were 52, 61.5, 66.4, respectively. The f2 of limonin and rutae-carpine, preparation were 70, 46.5, 53.7, respectively. It was concluded that within 10 h, the releasing behavior of berberine and limonin, rutaecarpine, preparation was similar. The releasing behavior of rutaecarpine and limonin, preparation was similar. However, the releasing behavior of limonin and preparation was different.