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Vitamins
are marketed as dietary supplements. In the United States, a dietary supplement is defined under the Dietary Supplement Health and Education Act of 1994 as a product that is intended to supplement the diet and contains any of the following: a vitamin, a mineral, an herb or other botanical, an amino acid. It may also contain a dietary substance for use by people to supplement the diet by increasing the total dietary in take or a concentrate, metabolite, constituent, extract or combination of any of the above. Furthermore, it must also conform to the following criteria: it is intended for ingestion in pill, capsule, tablet, powder or liquid form, not represented for use as a conventional food or as the sole item of a meal or diet and must be labeled as a “dietary supplement.”
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