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Dietary Supplements

USDA physiologist uses a neutralizing antibody test to measure immune response in individuals receiving vitamin A supplements

Dietary Supplements (FNIC)
USDA. NAL. Food and Nutrition Information Center. Provides general information, regulations, and answers to frequently asked questions.

Dietary Supplement Ingredient Database
USDA. ARS. Nutrient Data Laboratory; DHHS. NIH. Office of Dietary Supplements. Presents data files for nutrition researchers to calculate the amounts of active nutrients in supplements. Includes a scientific calculator to predict the levels of vitamins and minerals for representative products for adults and children.

Questions To Ask Before Taking Vitamin and Mineral Supplements
USDA. NAL. Food and Nutrition Information Center. Addresses concerns about supplement use based on current nutritional science, including the most common needs, side effects, and issues to talk about with your doctor.

Dietary Supplements (FDA)
DHHS. Food and Drug Administration. Offers definitions, labeling requirements, guidelines for use, and ways to report a problem related to dietary supplements. Includes links for dietary supplement manufacturers, packers, and distributors.

Using Dietary Supplements Wisely
DHHS. NIH. National Center for Complementary and Alternative Medicine. Provides a general overview of dietary supplements, discusses safety considerations, and suggests sources for additional information.

Health Information: Dietary Supplement Fact Sheets
DHHS. NIH. Office of Dietary Supplements. Gives summaries of individual vitamins, minerals and other dietary supplements including their basic functions, dietary requirements, common food sources, and effects on health.

Dietary Supplement Label Database
DHHS. NIH. Office of Dietary Supplements and The National Library of Medicine. Contains a searchable database of all of the dietary supplement products marketed in the U.S. Retrieves general product descriptions, directions for use, nutritional breakdowns, and manufacturers' contact information, all from the product labels. Developed for researchers and scientists.