Drug delivery systems are polymeric or lipid carrier systems that transport drugs to their targets or receptor sites in a manner that provides their maximum therapeutic activity prevents their degradation or inactivation during transit to the target site and protects the body from adverse reactions due to inappropriate disposition. It can be defined as a formulation or a device that enables the introduction of a therapeutic substance in the body and improves its efficacy and safety by controlling the rate, time, and place of release of drugs in the body.

Dra. Rudra Narayan Sahoo, Ph.D., professora assistente na Universidade de Tecnologia e Gestão do Centurião, Bhubaneswar, Odisha, Índia. A sua área de investigação de interesse é a formulação, desenvolvimento, e sistemas de administração de medicamentos.