e-Pharmatimes

Nanoparticles are sub-nano-sized colloidal structures composed of synthetic or semi-synthetic polymers. Its size ranges from 1-100nm. One can distinguish two types  of nanoparticles 1.Nanospheres 2.Nanocapsule Nanospheres - matrix systems. Nanocapsules - which are reservoir systems composed of a polymer membrane surrounding an oily or aqueous core. Advantages of Nanoparticles: ·          More uniform effect of the drug ·          Reduction in the frequency of the dosages ·          Site specific targeting ·          Various routes of administration ·          Better drug utilization and less side effects Disadvantages of Nanoparticles: •        High cost •        Productivity more di...