 nanoparticles have been used to improve the solubility and bioavailability of poorly soluble drugs. These particles can be prepared using various techniques such as emulsification, spray drying, and high pressure homogenization. Nanoparticle characterization includes particle size, surface charge, and Zeta potential. Applications include improved drug delivery, targeted drug delivery, and enhanced stability. This article was authored by Vishal Apatay and Y.K. Agriwal.