There are numerous approaches for delivering the drug at specific site, microspheres is one of the approach which produces sustained release action. Multiparticulate drug delivery system are suitable for achieving maximum bio availability and predetermined therapeutic effect, apart from this it also provide the advantage that it decreases the side effect and the chances of dose dumping so microspheres are proven to be one of the most effective approach to produce sustained release action. There are various types of microspheres like mucoadhesive, magnetic, floating microspheres which are responsible for targeted action of the drug. The purpose of the review is to assemble several types of microspheres, different manufacturing process, its applications and also various parameters to evaluate their productivity.
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