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and USDA
During dietary supplement manufacturing, many ingredients are added at higher than declared label amounts to compensate for losses during shelf life, but these overages are not standardized among manufacturers nor from one ingredient to another. As a result, actual ingredient amounts in dietary supplements are unknown to consumers and researchers.
To provide more accurate information on nutrient amounts in dietary supplements, DSID has tested ingredient levels in three common supplement categories: multivitamin/minerals (MVM), omega-3 supplements, and botanical supplements. These studies select products that are representative of the U.S. market for purchase. The products are then chemically analyzed. Results are evaluated with regression analysis to estimate the relationship between the analytically predicted amounts and the labeled amounts of various ingredients.
Learn about DSID studies on the following types of MVMs: Adult, Children, Prescription Prenatal, and Non-Prescription Prenatal.
View Studies
See the study of dietary supplements containing omega-3 fatty acids (also known as n-3 fatty acids and n-3 long-chain polyunsaturated fatty acids [n-3 LCPUFA]).
View Study DetailsRead about the DSID studies on botanical dietary supplements to evaluate levels of ingredients and ingredient constituents.
View Studies
