Nanosuspension: a novel approach to enhance solubility of poorly water soluble drugs- A review

Abstract

Solubility is the crucial factor for drug effectiveness, independence of the route of administration. Large proportion of newly discovered drugs are water insoluble and therefore poorly bioavailable contributing to desert development effort. Nanosuspensions have emerged as a promising strategy for the efficicent delivery of hydrophilic drugs because of their versatile features and unique advantages. The reduction of drug particles into submicron range leads to a significant increase in dissolution rate and therefore enhances bioavailability. Nanosuspension contain submicron colloidal dispersion of the pharmaceutical active ingredient particles in a liquid phase stabilised by surfactant. Nanosuspensions can be delivered by oral and non-oral route of administration. Study is focused on various methods of preparation with advantages and disadvantages, characterization properties, applications.