Abstract
The controlled-release tablets of sasanquasaponin-sodium alginate-hydroxy-propyl methyl cellulose (SQS-SAL-HPMC) were prepared by using SQS, SAL and HPMC as the main drug and accessories. The effects of the preparation method of the controlled-release powder and the amount of ethanol on release rate respectively were studied. The release rate curve of the data of the prescription of the controlled-release tablets of SQS-SAL-HPMC were fitted as zero order, one order and Higuchi equation. The controlled-release tablet of SQS-SAL-HPMC was characterized by IR techniques. The releasing rate of the controlled-release tablets of SQS-SAL-HPMC are controlled by controlling the preparation method of the controlled-release powder and the amount of ethanol. The controlled- release tablets of SQS-SAL-HPMC release SQS by slowness and constant in 12h. The chemical bonds are formed among SQS, SAL and HPMC.
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