ABSTRACT
Polysaccharides are macromolecular compounds linked by multiple monosaccharides or monosaccharide derivatives, with a variety of biological activities, such as anti-tumor, anti-oxidation, anti-virus, immunity enhancement, hypoglycemic, hypolipidemic. Its complex structure, diverse biological activities, good application prospects and broad sources of polysaccharides have attracted more and more researchers. The application of microcapsules, microspheres, nanoparticles, liposomes and other new preparation techniques in the preparation research and development of polysaccharides will not only improve the stability and bioavailability of polysaccharides, but also have a good targeting in the treatment of diseases and high biocompatibility. This paper described the characteristics of polysaccharide drugs, reviewed the research progress of new polysaccharide dosage forms, and summarized the application scope of new polysaccharide dosage forms, in order to provide new reference for the development and application of polysaccharides.