For their biodegradability in bodies, biodegradable polymers used as biomedical materials have an extensive application and are developed rapidly. Biomedical polymers promote the development of both traditional pharmaceutics and modern controlled or targeted pharmaceutics. In this paper, the colon-specific drug delivery system, the synthesis and the biodegradation of the novel hydrogels, which are used for colon-drug delivery, have been reviewed.
In colon, there is an abundant of the colonic bacte...
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