ABSTRACT
Objective: To investigate effects of different excipients and its compounds on extract granulating made by spray drying and to find the best compound of making granule. Methods: Taking difficulty of granulating; obtaining rate, granule dissolution rate, hygroscopicity as assessing index, evaluating effects of different excipients and its compounds on granulating and finding the best compound. Results: Different excipients and its compounds could significantly decrease the hygroscopicity of extract. Different compounds could sharply affect difficulty of granulating, obtaining rate and granule disdoultion while lightly affecting the hygroscopicity. Conclusion: When critical relative moisture is controlled under 65%, the following two compounds can be selected: (1) extract sucrose silion dioxide (500∶115∶25). (2) extract sucrose microcrystalline cellulosec silion dioxide.