Nanoparticulate drug delivery systems seem to be a viable and promising strategy for the biopharmaceutical industry. In particular of interest are polymeric nanoparticles have attracted the interest of many research groups and have been utilized in an increasing number of fields during the last decades. They have been used frequently as drug delivery vehicles due to their grand bioavailability, better encapsulation, controlled release and less toxic properties. Various nanoparticulate systems,

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... ypes of polymers used, fate of the polymeric nanoparticles in vivo, control release and improvement of therapeutic value of nanoencapsulated drugs are highlighted in the current review.