|Dietary Supplement Ingredient Database (DSID)|
The Nutrient Data Laboratory (NDL), Beltsville Human Nutrition Research Center (BHNRC), Agricultural Research Service (ARS), USDA, in collaboration with the Office of Dietary Supplements, National Institutes of Health (ODS/NIH) and other federal agencies has developed a Dietary Supplement Ingredient Database (DSID) to evaluate levels of ingredients in dietary supplement products. The DSID is funded, in large part, by the Office of Dietary Supplements. It builds on the well-recognized strengths of the USDA/ARS in developing food composition databases that support the assessment of nutrient intake from foods. ODS provides leadership, jointly with its federal partners, to make this a reality. The consortium of federal agencies includes ODS and partners at USDA/ARS, the National Center for Health Statistics of the Centers for Disease Control and Prevention (NCHS/CDC), the Food and Drug Administration (FDA), the National Cancer Institute (NCI), NIH, and the National Institute of Standards and Technology (NIST) of the Department of Commerce.
The goals for the DSID project are to: develop reliable estimates of ingredients and other bioactive components in dietary supplement products; compare analyzed levels of ingredients to labeled values, if available; support improved dietary intake assessments in research by providing analytical estimates of dietary supplement ingredient content; and release and maintain a publicly available dietary supplement database. Research methodologies and results are published in scientific journals and presented at scientific conferences.
The DSID project was initiated in 2003 with the identification of priority product categories and ingredients based on prevalence reports from the National Health and Nutrition Examination Survey (NHANES) and other national surveys. The highest priority category is multivitamin/minerals (MVMs), which are reported to be taken by over half of survey respondents. Dietary supplement ingredients have been prioritized based on public exposure, public health significance, research needs, and the availability of validated analytical methods and reference materials.
A national study of adult MVM products was begun in 2006, with multiple lots of over 100 products purchased from several market channels and sent to laboratories for analysis. The results from this adult MVM study provided data for ingredient estimates which were originally released in 2009 and updated in 2012. A national study of ingredients in children’s MVMs was begun in 2008, analyzing multiple lots of over 60 products. The results from these MVM studies form the basis for the ingredient estimates published in the 2012 DSID-2 release (http://dsid.usda.nih.gov).
For all DSID studies, representative supplement products are identified and sampled using statistical sampling plans. Samples are then analyzed by experienced laboratories and these data are statistically evaluated by ingredient. For the MVM studies released in DSID-2, data are reported by ingredient across a range of labeled