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ARS Home » Northeast Area » Beltsville, Maryland (BHNRC) » Beltsville Human Nutrition Research Center » Nutrient Data Laboratory » Research » Publications at this Location » Publication #217299

Title: Lessons Learned from the Analysis of Ingredients in Dietary Supplements

item Roseland, Janet

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 10/18/2008
Publication Date: 11/5/2007
Citation: Andrews, K., Roseland, J.M. 2007. Lessons Learned from the Analysis of Ingredients in Dietary Supplements. Supply Side West, November 5-7, 2007, Las Vegas, NV.

Interpretive Summary:

Technical Abstract: Lessons learned and findings from the analysis of caffeine in dietary supplements and the analysis of vitamins and minerals in adult multivitamin products will be included in this discussion. Fifty-four dietary supplement products for weight loss or sports performance listing at least caffeine-containing ingredient (guarana, kola nut, yerba mate, tea and cocoa) were selected from four main sales channels for analysis. The caffeine content was determined using high performance liquid chromatography and results were monitored for accuracy by the Nutrient Data Laboratory (NDL). NDL is also applying quality control measures to the laboratory analysis of over 20 vitamins and minerals in top-selling and randomly-chosen adult multivitamins.