Abstract
A polymer-grafted mucoadhesive system bearing isosorbide dinitrate was prepared for buccal administration. Polymer grafting of starch microspheres modified drug release and surface characteristics of microspheres. Bioadhesion and factors affecting bioadhesion were studied. Process variables that could affect microsphere size, and as a result the release of the drug, were also studied. It was observed that compression of grafted starch microspheres modified drug release and extended drug action via slow release following buccal application. Prepared system(s) were characterized for drug release and in vivo performance and compared with conventional oral treatment. The systems were noted to be promising.
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