Q&A: Dietary Supplement Certification: Quality and Safety Provider

  • Open What is NSF product certification?

    In addition to offering GMP facility audits, NSF can test and certify dietary supplements to NSF/ANSI Standard 173. Product certification helps assure consumers that your company’s supplements are not only manufactured using GMPs, but that they meet label claims and are free of any potentially harmful contaminants.

  • Open Why should you obtain product certification?

    For end-consumer confidence in your product!  NSF product certification verifies that a supplement’s contents actually match what is printed on the label.  It also ensures the product does not contain undeclared ingredients and that unacceptable levels of contaminants are not present in the supplement.

  • Open What does the certification process include?

    The certification process includes a toxicology label and formulation review to identify and quantify dietary ingredients declared on the product label, a contaminant screen, testing of declared supplement facts panel label claims, lab testing to ensure the product does not include unsafe levels of contaminants, and a good manufacturing practices (GMP) facility inspection.

  • Open How often do the products have to be tested?

    After a product is initially NSF certified, it will be tested for both contaminants and label claims on an annual basis, after a full annual toxicological review of the product formulation and label.  NSF auditors also review the formulations and labels during the annual GMP audits to assist the manufacturer with updating NSF formulations, if necessary, when compared to batch records.

  • Open What do you typically test for?

    All products are tested for contaminants such as heavy metals, aflatoxins, a micro screen, disintegration (for tablets and capsules) and pesticides (for products that include botanicals). Oils may be tested for rancidity, and marine products need PCB/dioxin testing on the marine oil.  All products are also tested by NSF toxicologists for supplement fact panel label claims, based on the number of active ingredients.

  • Open What is the best way for me to obtain pricing information?

    Email our team at dietarysupplements@nsf.org.

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