GNC
Retailer; no third-party certification confirmed · Mid-range
No third-party quality certification could be confirmed from any certifier's own database — GNC is absent from USP's Verified listing, from NSF Certified for Sport, and from NSF's GMP facility registry. Its published quality claims describe in-house scientific and regulatory review and internal testing, which is self-administered rather than independent. Contrary to common belief it no longer manufactures: SEC filings show Nutra Manufacturing was moved into a joint venture with International Vitamin Corporation in March 2019, with IVC's stake contractually rising to 100%. In December 2016 GNC entered a non-prosecution agreement with the Department of Justice and paid $2.25 million.
Quality programmes this brand reports
As published by the brand. Where the certifier keeps a public registry — NSF, USP, Informed Sport — look up the specific product there: a company-wide claim is not a batch certificate.
Known for
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How we checked
Certification claims here are verified against the certifier’s own database, not the brand’s marketing. Check them yourself:
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GNCtesting & certifications — FAQ
Is GNC third-party tested?
GNC reports the following quality programmes: No third-party certification program confirmed. Third-party testing checks a product's identity, potency, and purity against its label. We reproduce what the brand publishes; where the certifier keeps a public registry (NSF, USP, Informed Sport), look the specific product up there before relying on it — a company-wide claim is not a batch certificate.
How we assess supplement brands
Supplements aren't FDA recall-rated like prescription drugs, so we don't assign a recall-safety score here. Instead we report what a brand is independently verified for — NSF, NSF Certified for Sport, USP Verified, Informed Sport, cGMP, and batch testing — the signals that actually separate supplement quality. This is general reference, not medical advice; always consult a professional.