Topic overview

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Pharmacognosy connects the study of natural sources with their medicinal use. Its scope includes source identification and taxonomy, cultivation, harvesting, and post-harvest processing of crude drugs. Macroscopic and microscopic examination helps confirm identity and detect adulteration or substitution, while chemical profiling investigates groups such as alkaloids, glycosides, terpenoids, and phenolics. The field also relates chemical structure to biological activity and clinical relevance, and contributes to drug discovery through natural-product research and traditional-knowledge evaluation. Quality work considers authenticity, purity, potency, and stability; safety assessment considers toxic constituents, contaminants, and herb–drug interactions. Pharmacognosy also addresses regulatory frameworks and sustainable, ethical sourcing, drawing on disciplines including botany, chemistry, pharmacology, and toxicology.