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Classification of Drugs PDF Note Pharmacognosy Free Download For Pharmacy Students. Classification of crude drugs
• Crude drug i.e Simple drug
• Crude drugs are plant, animal or their parts which after collection are subjected only to drying or making them into transverse/ longitudinal slices pieces or peeling them in some cases. They exist in natural form.
• Crude drugs may be derived from various natural sources like plants, animals, minerals and microorganisms etc.
• Because of their wide distribution the arrangement of classification in a definite sequence is necessary to understand easily. Although each system of classification has its own merits and demerits, but for the purpose of study the drugs are classified in the following different ways: