The genus Viola (Violaceae) consists of approximately 500 species widely distributed throughout the world. Phytochemically, different groups of compounds have been isolated from various species of this genus like cyclotide alkaloids, flavonoids, caffeic acid derivatives, salicylic acid and triterpenoids. Traditional knowledge when tested pharmacologically and phytochemically could provide new effective therapeutic agents. The family Violaceae having an important medicinal herb, mentioned in traditional medicine for a variety of therapeutic applications including purification of blood and the treatment of bruises and ulcers in the Chinese system of medicine it is recommended for use against cancer disorders. The genus mostly used in the traditional medicinal system for cough, cold, flu, fever, malaria and is also given as anticancerous drug. The article reviews is an attempt to compile and documented information on different aspect of Viola species pharmacological properties and highlight the need for research and their potential development.
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