• Decrease font size
  • Return font size to normal
  • Increase font size
U.S. Department of Health and Human Services

About FDA

  • Print
  • Share
  • E-mail

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.

Basics Question toggle Show all related FDA Basics Questions

-

How helpful was this information?

                               

Not HelpfulArrow pointing to the rightVery Helpful


Please limit your feedback to 1000 characters.

Please limit your feedback to 1000 characters.

If you would like to ask a specific question, please visit our "Contact Us" page for more information about how to contact FDA.

Please note that any information you submit may become public or subject to release under the Freedom of Information Act (FOIA). For more information, read about our privacy policies and the FOIA.

-