 Exosomes are small, membrane-bound vesicles released from cells into the extracellular environment. They have been found to play a role in many biological and pathological processes, including cell communication, immune regulation, and cancer progression. Due to their non-immunogenic nature, exosomes can be used as drug carriers for targeted drug delivery. This paper reviews the origin and structure of exosomes, their biological functions, and their potential use as drug delivery vehicles. It also discusses the advantages and challenges associated with using exosomes as drug delivery vehicles. This article was authored by Dinh Ha, Ningning Yang, and Venkaterdine Adith.