Phytochemical variability in commer- cial herbal products and preparations of Withania somnifera (Ashwagandha)

作者: R. S. Sangwan , R. Sharma , R. Tuli , G. N. Qazi , K. A. Suri

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摘要: Withania somnifera (Hindi - Ashwagandha, English winter cherry) is used in Ayurvedic formulations for a variety of health-promoting effects. Several mono- and poly-herbal products commercially available the Indian market were quantitatively analysed number chemical constituents. The results revealed wide variations content all seven constituents tested. More than 70-fold variation daily intake withaferin A (the main active constituent Ashwagandha) was found products. study thus emphasizes need stringent phytochemical standardization herbal

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