Nano size drug particles refers to the particle size from 1-1000nm are emerging as an excellent vehicles for the delivery of the many poorly water soluble drug compound. Because of their versatile nature and unique advantages like large surface area,increased saturation solubility and ability to be incorporated in various range of dosage form like parenteral, peroral, ocular and pulmonary routes have made them very enticing for the formulation scientists around the world. A pharmaceutical nanosuspension contains colloid particles dispersed in an suitable vehicle mostly aqueous without any matrix material , stabilized by surfactants or polymers mainly by media milling and High pressure homogenization or combination of both. This review describes the definition, basic characteristics, advantages, methods of preparation, characterization, name of patented technology and its current market formulation.
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