USP Verified Dietary Supplements

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The USP Dietary Supplement Verification Program is a voluntary testing and auditing program that helps dietary supplement manufacturers ensure the production of quality products for consumers.

The USP Verified Mark and What It Means

Products that meet the program's stringent criteria are awarded the distinctive USP Verified Mark for use on labels, packaging, and promotional materials. The Mark makes it easy for customers, healthcare practitioners, and retailers to identify USP Verified products. Seeing the USP Verified Mark on a label indicates that the dietary supplement product inside

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  • Contains the ingredients listed on the label, in the declared potency and amounts. Read More
    Tests have shown that contents of some supplements don't match the label and some contain significantly less or more than the claimed amount of key ingredients. USP Dietary Supplement Verification helps assure customers that they are getting the value they expect from a product they are purchasing.
  • Does not contain harmful levels of specified contaminants. Read More
    Some supplements have been shown to contain harmful levels of certain heavy metals (e.g., lead and mercury), pesticides, bacteria, molds, toxins, or other contaminants. At specific levels these contaminants can pose serious risks to one's health.
  • Will break down and release into the body within a specified amount of time. Read More
    If a supplement does not break down properly to allow its ingredients to be available for absorption in the body, the consumer will not get the full benefit of its contents. USP Dietary Supplement Verification tests products against federally-recognized dissolution standards.
  • Has been made according to FDA current Good Manufacturing Practices using sanitary and well-controlled procedures. Read More
    Assurance of safe, sanitary, well-controlled, and well-documented manufacturing and monitoring processes indicates that a supplement manufacturer is quality-conscious, and that the supplement will be manufactured with consistent quality from batch to batch.

Where You Can Find the Mark

The USP Verified Mark can be found on dietary supplement products stocked in U.S. pharmacies, wholesale clubs, groceries, and other retail outlets. (See a complete list of current USP Verified products.) The USP Verified Mark also appears next to verified products featured on the Natural Medicines Comprehensive Database.

What Makes the Program Unique

As a nonprofit federally recognized standards-setting organization, USP is the only such organization that also offers voluntary verification services. USP's expertise in the field stems from its nearly 200 years of experience establishing standards of quality for medications and, more recently, dietary supplements and food ingredients. USP standards are used in more than 140 countries and are federally recognized per the Federal Food, Drug and Cosmetic Act and the Dietary Supplement Health and Education Act.