Pharmaceutics 2010, 2(1), 50-60; doi:10.3390/pharmaceutics2010050
Article

Ingredient Consistency of Commercially Available Polyphenol and Tocopherol Nutraceuticals

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Received: 28 January 2010; in revised form: 3 March 2010 / Accepted: 4 March 2010 / Published: 8 March 2010
(This article belongs to the Special Issue What's on Board in Pharmaceutics)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Label claims of vitamin E succinate and polyphenolic nutraceuticals are assessed. A validated HPLC method was utilized to assess vitamin E succinate products. Three novel LC/MS methods were used to assess the polyphenols, pterostilbene, phloretin, and myricetin, in dietary supplements. The amount of vitamin E succinate varied from 0-130% of the stated label content with two products containing vitamin E acetate rather than vitamin E succinate. Expected polyphenols were found in 7 of the 8 supplement products. None of the polyphenol supplements contained content within 100-120% of label claims. The present study indicates a lack of uniformity in nutraceutical products.
Keywords: content analysis; polyphenols; nutraceuticals; vitamin E succinate; pterostilbene; phloretin; myricetin
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MDPI and ACS Style

Remsberg, C.M.; Good, R.L.; Davies, N.M. Ingredient Consistency of Commercially Available Polyphenol and Tocopherol Nutraceuticals. Pharmaceutics 2010, 2, 50-60.

AMA Style

Remsberg CM, Good RL, Davies NM. Ingredient Consistency of Commercially Available Polyphenol and Tocopherol Nutraceuticals. Pharmaceutics. 2010; 2(1):50-60.

Chicago/Turabian Style

Remsberg, Connie M.; Good, Renee L.; Davies, Neal M. 2010. "Ingredient Consistency of Commercially Available Polyphenol and Tocopherol Nutraceuticals." Pharmaceutics 2, no. 1: 50-60.


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