The nano drug delivery system has emerged as a novel therapeutic approach for improved efficacy of the existing molecules. Polymeric nanoparticles, lipid based nanoparticles such solid (SLNs), nanostructured carriers, conjugates, ethosomes, liposomes, and self-emulsifying systems are few carriers used delivery. Among SLNs promising in terms biocompatible carrier enhancing bioavailability, contr...