Description
Crude drugs are derived from a variety of natural sources like plants, animals, minerals, and microorganisms. Because of their wide distribution, the arrangement or classification of drugs in a particular sequence is necessary for their easy understanding. For pharmacognostic study crude drugs are classified as follows: Alphabetical classification, Chemical classification, Pharmacological classification, Morphological classification, Taxonomical classification, Chemo taxonomical classification, Each of these systems of classification has its merits and demerits.
