Polymeric nanoparticles have attracted appreciable interest over recent years thanks to their properties ensuing from their little size. Blessings of compound NPs as drug carriers embrace their potential use for controlled unleash the flexibility to shield drug and alternative molecules with biological activity against the setting, improve their bioavailability and therapeutic index. The term “nanoparticle” includes each Nano capsules and Nano spheres that take issue with relation to their morphology. Nano capsules square measure composed of Associate in nursing oily core within which the drug is sometimes dissolved, enclosed by a compound shell that controls the discharge profile of the drug from the core. Nano spheres square measure supported never-ending compound network within which the drug is preserved within or adsorb able onto their surface. These 2 styles of compound NPs recognized as a reservoir system (Nano capsule).