Drug delivery is a field of research focused on developing innovative ways to deliver medications to target specific sites within the body in a controlled and efficient manner. This includes studying different methods of drug administration, such as oral, transdermal, inhalation, or injection, as well as exploring various drug delivery systems, such as nanoparticles, liposomes, micelles, and polymeric implants. The goal of drug delivery research is to improve the effectiveness, safety, and convenience of drug therapies, while minimizing side effects and increasing patient compliance. This research area plays a crucial role in the development of new and improved treatments for a wide range of diseases and medical conditions.