Pharmaceutical industries are transforming rapidly due to continuous research and innovation. Nanoparticle based therapies provide growth engines to this sector. It offers targeted, efficient and customizable treatment options. This chapter provides detailed overview on various types of nanoparticles and discusses the underlying mechanisms of action. It also explains the economic aspects of nanoparticles therapies, it’s role in economics, it also explains challenges related to manufacturing scalability and its market accessibility. Furthermore, ethical considerations are also examined, including environmental impacts, patient consent, and equitable access to treatment. The chapter concludes by discussing emerging trends in nanoparticle research and proposing strategies to address current economic and ethical gaps, offering a forward-looking perspective on the responsible advancement of nanomedicine.