- An FDA Guide to Dietary Supplements
- Discusses label requirements, definition of a supplement, safety monitoring, truth behind manufacturers' claims, and reporting harmful effects or illness.
- Merck Manual: Vitamins
- Explains sources, functions, recommended allowances, and safe upper limits for a variety of vitamins. Includes difference between fat and water soluble, and drugs that can cause deficiencies.
- Multivitamin/Mineral Supplements and Chronic Disease Prevention
- Offers information about use of supplements, affect on chronic disease prevention, and research recommendations. Includes preliminary findings by specific vitamin or mineral. [PDF].
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