COMPARATIVE STUDY OF DIFFERENT SYSTEMS OF CRUDE DRUG CLASSIFICATION

Crude drugs are naturally occurring substances obtained from plants, animals, or minerals, which serve as the fundamental raw materials for the preparation of both traditional and modern medicines. They play a vital role in pharmacognosy, as their proper identification, authentication, and standardization are essential for ensuring the safety, efficacy, and quality of herbal and pharmaceutical products. To facilitate their systematic study and practical application, several methods of classification have been developed over time. These systems categorize crude drugs based on various criteria such as their natural source, morphological characteristics, chemical constituents, and pharmacological actions. Each classification approach provides unique insights— sourcebased classifications emphasize origin, chemical classifications focus on active constituents, and pharmacological classifications relate drugs to their therapeutic uses. This review comprehensively explores and compares the major systems of crude drug classification, detailing their underlying principles, representative examples, advantages, and limitations. Furthermore, it discusses recent advancements in modern scientific classification, including chemotaxonomic and molecular approaches, which integrate traditional knowledge with contemporary analytical techniques. The study aims to highlight the importance of a wellstructured classification system in improving drug discovery, quality control, and the overall development of pharmacognostic research.