Pharmacognosy is the study of medicines derived from natural sources. The American Society of Pharmacognosy defines pharmacognosy as "the physical, chemical,biochemical and biological properties of drugs,drug substances or potential drugs or drug substances of natural origin as well as the search for new drugs from natural sources.It is also defined as the study of crude drugs."

The major objective of the Department of Pharmacognosy is to transmit a naive mode and approach for optimum utilization of plants and herbs as curing diseases and ailments alongside developing novel tactics and techniques to preserve natural flora as well as the key information related to it , which is on the way of extinction. The department also keep the objective of uplifting the medicinal system and social status of farmers and allied workers.