ABSTRACT
Solid lipid nanoparticles (SLNs) have emerged as a remarkable nanocolloidal system for drug delivery. This reviewpresents contemporary information regarding various aspects about SLNs, i.e., SLN morphology, structural features,preparatory methods, and their characterizations. This carrier system allows advancing the therapeutic efficacy ofdrugs belonging to several categories. The present uses of SLNs include cancer therapy, infectious conditions, diabetes,central nervous system disorders, cardiovascular disorders, cosmeceuticals, and others. SLNs facilitate improved thepharmacokinetics and modify the drug releases. The prospect of surface modification, enhanced permeation againstvarious biological barriers, the ability to resist chemical degradation, and the possibility of encapsulation of twoor more therapeutic agents simultaneously has gained attention for SLNs universally. Simultaneously, this reviewemphasizes on recent research trends pertaining to this carrier system.