Psychopharmacology is an area of explicating mechanisms by which drugs affect behavior. Preclinical psychopharmacology has a series of sections such as behavioral, neural, translational, molecular, genetic and epigenetic.  The precise interaction between drugs and their receptors is stated to as drug action, and the extensive changes in physiological or psychological function is stated to as drug effect. There are both benefits and drawbacks of psychopharmacology, where addiction is the main drawback. The continuous usage or addition of psychoactive medication leads to side effects for example insomnia, anxiety, sweating, vomiting etc.,