About FDA
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What is a dietary supplement?
A dietary supplement is a product intended for ingestion that contains a "dietary ingredient" intended to add further nutritional value to (supplement) the diet. A "dietary ingredient" may be one, or any combination, of the following substances:
- a vitamin
- a mineral
- an herb or other botanical
- an amino acid
- a dietary substance for use by people to supplement the diet by increasing the total dietary intake
- a concentrate, metabolite, constituent, or extract
Dietary supplements may be found in many forms such as tablets, capsules, softgels, gelcaps, liquids, or powders. Some dietary supplements can help ensure that you get an adequate dietary intake of essential nutrients; others may help you reduce your risk of disease.
Show all related FDA Basics Questions
- Are dietary supplements approved by FDA?
- If I take vitamins already, should I be eating foods that are fortified with vitamins as well? Is there such a thing as taking too many vitamins?
- Are foods that contain added nutrients considered "enriched"?
- What is the difference between a dietary supplement and a conventional food?
- Is a dietary supplement a food or a drug?
- What is a dietary supplement?
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