The GMP Advantage: Helping European Supplement Companies Enter the US Market

NSF/ANSI 455-2 certification provides independent verification of dietary supplement GMP compliance, helping support supplier qualification and commercial discussions with US retailers, distributors and importers.

Expanding into the US dietary supplement market requires more than a strong quality programme. Manufacturers must demonstrate alignment with FDA dietary supplement GMP requirements under 21 CFR Part 111 while meeting expectations from retailers, distributors and importers.

For many UK and EU manufacturers, the challenge is not building quality systems, but demonstrating FDA readiness to U.S. stakeholders in a credible, independent way.

NSF/ANSI 455-2: Dietary Supplements GMP Certification is an accredited third-party GMP certification programme developed specifically for dietary supplement manufacturers.

Certification provides independent verification that your quality systems align with FDA dietary supplement GMP requirements and support U.S. regulatory and commercial expectations. It can also support qualification discussions with U.S. retailers, distributors and e-commerce platforms, including Amazon.

Whether you manufacture dietary supplements or own a brand seeking U.S. market access, NSF/ANSI 455-2 provides independent verification that can support supplier qualification and commercial discussions with U.S. partners.

Many dietary supplement manufacturers in the UK and Europe already operate under established quality systems such as BRCGS, FSSC 22000 and other GFSI-benchmarked programmes.

While these systems provide a strong foundation, they do not fully address FDA dietary supplement GMP requirements under 21 CFR Part 111.

As manufacturers expand into the US market , they often need to demonstrate alignment with FDA dietary supplement GMP requirements to retailers, importers, distributors and commercial partners. NSF/ANSI 455-2 GMP certification helps exporters move from self-declared compliance to independently verified compliance.

cGMP is the regulatory requirement. NSF GMP certification is the proof.

Why U.S. Market Expansion Can Be Challenging

Entering the US dietary supplement market introduces a different regulatory and commercial environment.

Manufacturers may face:

• FDA readiness requirements.
• Increased scrutiny from importers and distributors.
• Requests for documented evidence of GMP compliance.
• Marketplace-specific requirements, including Amazon dietary supplement compliance requirements.
• Delays caused by compliance gaps identified late in the export process.

Meeting EU requirements does not automatically demonstrate FDA readiness. Independent certification provides documented third-party verification beyond self-declared compliance.

How NSF/ANSI 455-2 Supports FDA Readiness

Independent Verification of FDA GMP Alignment

What is NSF/ANSI 455-2?

NSF/ANSI 455-2 is an American National Standard specifically designed to assess dietary supplement manufacturing operations against FDA dietary supplement GMP requirements under 21 CFR Part 111.

Through third-party audits and ongoing certification oversight, manufacturers gain independent verification of GMP alignment that can be shared with customers, retailers and commercial partners.

Certification includes independent auditing and ongoing monitoring, providing an external verification layer beyond internal compliance programmes.

Benefits

• Strengthen FDA readiness
• Identify compliance gaps before regulatory reviews
• Demonstrate GMP alignment through independent certification
• Support importer, distributor and U.S. retail supplier qualification
• Reduce compliance friction when entering the US market
• Build credibility with U.S. buyers and commercial partners

FDA GMP requirements establish the expectation. NSF GMP certification provides independent verification that your systems align with those requirements.

Supporting US Retail Qualification

Many retailers, distributors and marketplace operators look for evidence of robust quality systems when evaluating potential suppliers.

NSF/ANSI 455-2 certification can help support:

• Supplier onboarding.
• Retail qualification reviews.
• Distributor approval processes.
• Commercial due diligence.
• Market expansion planning.

Independent certification helps manufacturers demonstrate supplier readiness and quality system maturity to U.S. retailers, importers, distributors and e-commerce partners.

Why NSF?

• Regulatory Alignment: Purpose-built around FDA dietary supplement GMP requirements.
• Retail Recognition: Recognized throughout U.S. retail and quality ecosystems.
• Ongoing Verification: Independent audits and monitoring beyond a one-time assessment.
• Global Credibility and Local Support: NSF developed NSF/ANSI 455-2 and combines globally recognised certification expertise with local support for manufacturers across the UK and Europe.

Your Pathway to U.S. Market Readiness

1. Assess GMP alignment against FDA expectations
2. Achieve NSF/ANSI 455-2 certification
3. Demonstrate supplier readiness to U.S. buyers
4. Support retailer, importer and distributor qualification
5. Expand confidently into the U.S. market

Looking Beyond GMP Certification?

Product Certification for Dietary Supplements

Manufacturing system certification and product certification serve different purposes within a quality strategy.

NSF/ANSI 455-2 focuses on manufacturing systems, facility controls and GMP compliance. For manufacturers seeking an additional level of market differentiation, NSF product certification complements GMP certification by verifying product quality, testing and label claim compliance.

NSF/ANSI 173 Contents Certified® certification provides independent verification of finished-product contents, ingredient identity and label claim accuracy through testing, certification and ongoing oversight. Together, these programmes can help manufacturers demonstrate confidence in both their manufacturing systems and their finished products.