Neuropharmacology is the study of determination of how drugs affect the cellular function in the nervous system, and the neural mechanisms through which they influence behavior. It comprises of 2 branches namely behavioral and molecular neuropharmacology where behavioral mainly focuses on the study of how drugs affect human behavior and how drug dependence and addiction affect the human brain whereas molecular neuropharmacology focuses on study of neurons and their neurochemical interactions, with the overall goal of developing drugs that have beneficial effects on neurological function.