Eichhornia crassipes (Mart.) Solms (Waterhyacinth), an aquatic perennial herb present throughout the world, has a myriad of metabolites. Phenalenone compounds and sterols have been isolated from this plant. Extracts, as well as pure compounds isolated from this plant, have been demonstrated to possess pharmacological activities. An account of the phytochemistry, pharmacological activities and several applications of waterhyacinth are included in this review.
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