The United States is the world's largest dietary supplement market, generating over $56 billion in retail sales in 2024 (Nutrition Business Journal, 2025). For overseas manufacturers — whether in China, Europe, Southeast Asia, or Latin America — accessing this market requires navigating a regulatory framework that is simultaneously less restrictive than most consumers assume and more exacting in its documentation requirements than most manufacturers anticipate.

The term 'FDA-registered' is used loosely in the supplement industry, often by manufacturers who are partially compliant but not fully qualified. This guide provides the definitive step-by-step process for an overseas manufacturer or brand to achieve genuine, defensible US market compliance — covering facility registration, cGMP requirements, ingredient authorization, label compliance, and ongoing import obligations.

一. Understanding What 'FDA Registration' Actually Means

The phrase 'FDA-registered' in the supplement industry is frequently misunderstood — and even more frequently misrepresented. Before beginning the registration process, it is essential to understand exactly what FDA registration does and does not confer.

What FDA Facility Registration IS:

* A mandatory administrative requirement for all facilities that manufacture, process, pack, or hold food for human consumption in the US, or import such products into the US

* A database record maintained by the FDA identifying your facility, its location, and the types of products it produces

* Renewed biennially (every two years) during the October-December renewal window

* Required under the Food Safety Modernization Act (FSMA) of 2011 and 21 CFR Part 1, Subpart H

What FDA Facility Registration IS NOT:

* An approval or endorsement of your product, formula, or manufacturing practices

* A certification that your facility is cGMP-compliant — registration and compliance are separate obligations

* A guarantee that your products will clear US Customs without issue

* A substitute for a New Dietary Ingredient (NDI) notification, structure/function claim notification, or any other product-specific regulatory obligation

WARNING: A common misrepresentation in supplement marketing is that 'FDA-registered facility' implies FDA approval or endorsement of the products made there. The FDA explicitly states on its website that registration does not constitute approval of the facility or its products. Using 'FDA-approved' language for a dietary supplement is a false claim — the FDA does not approve dietary supplements before they reach the market.

二. The Complete US Market Entry Framework: Five Parallel Obligations

Achieving full US market compliance for a dietary supplement involves five distinct regulatory obligations that are legally independent but operationally interconnected. Most overseas manufacturers understand one or two of these — genuine compliance requires all five.

The sections below address each obligation in the sequence that an overseas manufacturer entering the US market should address them — starting with facility registration and working through to ongoing compliance.

三. FDA Facility Registration — The Administrative Foundation

3.1 Who Must Register

Under 21 CFR Part 1.226, the following facilities must register with the FDA:

* Domestic facilities that manufacture, process, pack, or hold food for human consumption in the US

* Foreign facilities that manufacture, process, pack, or hold food for consumption in the US — even if the food is first exported to another country before entering the US

* Facilities that manufacture dietary supplement components (raw ingredients) that will be used in finished supplement products sold in the US

If your facility makes supplements destined for the US market, registration is mandatory — not optional.

3.2 How to Register: The Exact Process

1. Create an account at the FDA Industry Systems portal: https://www.access.fda.gov

2. Select 'Food Facility Registration' from the available registration types

3. Complete Form FDA 3537 electronically. Required information includes: facility legal name and trade name; physical address (P.O. boxes are not accepted); FDA product categories (for supplements: 'Dietary Supplements' under the food category list); US Agent contact information (mandatory for all foreign facilities — this must be a person or entity physically located in the US who accepts regulatory communications on the facility's behalf)

4. Submit the registration. FDA assigns a Facility Registration Number, also called the FEI (Food Establishment Identifier) number, typically within 1-3 business days

5. Print or save the registration confirmation. The FEI number must be available to provide to US Customs, importers, and buyers upon request

TIP: The US Agent requirement for foreign facilities is frequently overlooked. Your US Agent is the person who will receive FDA communications — including import alerts, warning letters, and inspection notices — on your facility's behalf. They must be physically in the US and reachable during US business hours. Using a PO Box or a non-responsive agent is a compliance failure. Many regulatory consulting firms offer US Agent services for $500-$2,000 per year.

3.3 Biennial Renewal

FDA facility registration must be renewed every two years. The renewal window is October 1 through December 31 of even-numbered years. Facilities that fail to renew within this window have their registration automatically cancelled. A facility with a cancelled registration cannot legally export to the US — shipments will be refused at the border.

* Set a permanent calendar reminder: 'FDA Registration Renewal — October 1' for every even-numbered year

* Renewal is done through the same FDA Industry Systems portal; it is not automatic

* If any facility information (address, ownership, US Agent) changes between renewal periods, update the registration within 60 days of the change

3.4 How Buyers Verify Your FDA Registration

Your US customers and Amazon will ask for your FEI number and may verify it independently. They can do this at:

* FDA's online FEI search tool: fda.gov/food/food-safety-modernization-act-fsma/fsma-final-rule-food-facility-registration

* FDA's public database of registered facilities: accessdata.fda.gov/scripts/oie/

Buyers will verify that your registration is current (not expired or cancelled), that the facility name matches your documentation, and in some cases that the product categories listed match the products you are supplying.

四. cGMP Compliance — The Operational Obligation

FDA facility registration tells the FDA where you are. cGMP compliance is about what you do when you get there. For dietary supplements, cGMP requirements are codified in 21 CFR Part 111 — Current Good Manufacturing Practice in Manufacturing, Packaging, Labeling, or Holding Operations for Dietary Supplements.

21 CFR Part 111 is a substantial regulatory framework containing 154 sections covering:

4.1 The Eight Core cGMP Requirements

4.2 cGMP Compliance Evidence: What US Buyers Actually Accept

Telling a US buyer 'we are cGMP-compliant' carries no weight without documentary evidence. The forms of cGMP evidence that US buyers, Amazon, and retail partners actually accept are

WARNING: An ISO 9001 Quality Management System certificate is frequently presented as cGMP evidence by overseas manufacturers. ISO 9001 is a general quality management standard. It does not specifically address the dietary supplement manufacturing requirements of 21 CFR Part 111. ISO 9001 alone is not acceptable as cGMP evidence for US dietary supplement market access.

五. : Ingredient Authorization — Navigating DSHEA and NDI Requirements

The Dietary Supplement Health and Education Act of 1994 (DSHEA) created the legal framework for the dietary supplement category in the US. One of its most practically important provisions is the New Dietary Ingredient (NDI) requirement.

5.1 The October 15, 1994 Dividing Line

DSHEA established October 15, 1994 as the critical date. Dietary ingredients that were marketed in the US before this date (called 'pre-DSHEA ingredients') can be used in supplements without pre-notification. Dietary ingredients first introduced after this date are classified as New Dietary Ingredients (NDIs) and require a pre-market notification to the FDA.

For overseas manufacturers, this creates a practical challenge: many ingredients that are standard components of supplements in Europe, Asia, or other markets may qualify as NDIs in the US because they were not part of the US supplement market before 1994.

5.2 How to Determine if Your Ingredient Requires an NDI Notification

1. Search the FDA's NDI database at: fda.gov/food/dietary-supplement-ingredient-directory to see whether a notification has already been submitted for your ingredient

2. Review the ingredient against the FDA's Old Dietary Ingredient (ODI) list — ingredients with documented use in US supplements before October 15, 1994

3. For botanical ingredients: verify whether the specific plant species, extraction method, and intended use matches a pre-1994 documented use (a different extraction method on the same plant may constitute a new dietary ingredient)

4. If uncertain, engage a US regulatory attorney or consultant with supplement expertise to provide a written ingredient status opinion before commercializing

5.3 The NDI Notification Process

If your ingredient requires an NDI notification, the process is:

5. Prepare a notification dossier including: identity and composition of the ingredient; conditions of use (dose, population, frequency); manufacturing process description; stability data; safety data (toxicology studies, clinical data, or history of use documentation); rationale for safety conclusion

6. Submit the notification to FDA Center for Food Safety and Applied Nutrition (CFSAN) at least 75 days before marketing the ingredient

7. The FDA reviews and issues a response within 75 days — responses range from 'no objection' to requests for additional information to objection letters

8. Marketing may commence 75 days after notification submission even without an explicit FDA response — but an objection letter requires addressing before marketing

WARNING: The cost and timeline for a complete NDI notification dossier is significant: preparing a defensible NDI notification typically costs $50,000-$200,000+ in consultant fees, toxicology studies, and regulatory preparation, and takes 6-18 months. For overseas manufacturers planning US market entry, ingredient status review should occur in the product development phase — not after manufacturing.

5.4 High-Risk Ingredients for Overseas Manufacturers

六. : Label Compliance — The Documentation Every Product Must Have

Under 21 CFR Part 101, every dietary supplement sold in the US must have a label that contains specific required elements. Mislabeling is one of the FDA's most commonly enforced violations and is a leading cause of import refusal at US Customs.

6.1 Required Label Elements

6.2 The Supplement Facts Panel: Technical Requirements

The Supplement Facts panel is the most technically complex label element and the most frequently cited source of import refusal. Key technical requirements include:

* Title 'Supplement Facts' in large, bold type

* Serving size stated in both units ('2 capsules') and metric weight ('1,000 mg') where applicable

* All dietary ingredients with a Daily Value listed, along with the %DV calculated against FDA reference amounts (not custom reference amounts)

* All dietary ingredients without an established DV listed with the dagger symbol indicating no DV has been established

* Subgroups of vitamins, minerals, and other dietary ingredients listed in the order specified by 21 CFR Part 101.36(b)

* Type size requirements: Supplement Facts title in minimum 13-point type; other content in minimum 8-point type; hairline rules separating rows

TIP: Label compliance is a specialized skill. The FDA's final rule on supplement labeling is published at 21 CFR Part 101.36 and runs to over 40 pages of regulatory text. For overseas manufacturers without a dedicated US regulatory team, engaging a US supplement label regulatory consultant for a label compliance review ($500-$2,000 per label) before printing any packaging is strongly recommended.
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七. Structure/Function Claim Notification — Optional but Strategic

If your supplement label includes any statement about how the product affects the structure or function of the human body — for example, 'supports immune function,' 'promotes healthy sleep,' or 'helps maintain muscle mass' — you are making a structure/function claim and are subject to notification requirements under 21 CFR Part 101.93.

7.1 The Notification Process

1. Identify all structure/function claims you intend to make on the label and in marketing materials

2. Verify each claim is substantiated by competent and reliable scientific evidence (this is the legal standard)

3. Notify the FDA by submitting Form FDA 3670 within 30 days of first marketing the product with the claim

4. Ensure the label carries the mandatory FDA disclaimer adjacent to each claim

5. Maintain substantiation files for each claim (scientific references, expert opinions) — these must be available if the FDA requests them

There is no fee for structure/function claim notification and no approval process — you are informing the FDA, not requesting permission. However, the obligation to substantiate claims is real and ongoing.

7.2 Disease Claims Are Prohibited — The Line You Cannot Cross

The distinction between a permissible structure/function claim and a prohibited disease claim is the most important compliance concept in US supplement marketing. Crossing this line transforms your product from a legal dietary supplement into an unapproved new drug — with serious legal consequences.

八. Import Compliance: Getting Your Product Through US Customs

FDA registration and cGMP compliance are prerequisite conditions for US market access — they must be in place before the first shipment arrives. At the port of entry, US Customs and Border Protection (CBP) and the FDA jointly screen imported food and supplement products.

8.1 Import Documentation Requirements

Every shipment of dietary supplements entering the US must be accompanied by:

* Commercial Invoice: seller name and address, buyer name and address, product description, quantity, unit value, country of origin, HTS (Harmonized Tariff Schedule) classification code

* Packing List: detailed contents of each carton, lot numbers, unit counts

* Bill of Lading or Air Waybill: shipping documentation from carrier

* Certificate of Origin: confirming the country of manufacture

FDA Prior Notice: mandatory electronic pre-notification to the FDA required for all imported food and supplements, submitted through the FDA's Prior Notice System Interface (PNSI) or through the Automated Broker Interface (ABI), typically 2-5 days before arrival depending on shipment mode

WARNING: Prior Notice is a legal requirement under the Bioterrorism Act of 2002, incorporated into FSMA. Failure to submit Prior Notice before shipment arrival causes the shipment to be detained at the port. Prior Notice must be submitted for every shipment, by the shipper, importer, or their customs broker.

8.2 Common Causes of Import Refusal

8.3 Understanding the FDA Import Alert System

The FDA's Import Alert database is one of the most important — and most overlooked — tools in supplement import compliance. An Import Alert, particularly a 'Detention Without Physical Examination' (DWPE) alert, means that every shipment from the flagged facility or containing the flagged product is automatically detained at the US border without the FDA needing to physically examine it first.

* Search the FDA Import Alert database at: fda.gov/safety/import-alerts before selecting any overseas manufacturer

* An existing DWPE alert against a manufacturer is effectively a market exclusion from the US — clearing it requires resolving the underlying compliance issue and petitioning the FDA for removal, a process that can take 12-24 months

* Import alerts are facility-specific, not product-specific — a manufacturer under import alert cannot export any products to the US, regardless of which specific product triggered the alert

九. Practical Timelines: How Long Does US Market Compliance Take?

十. How to Choose a US Regulatory Agent and Consultant

Navigating US supplement regulations without in-house FDA expertise is possible but risky. Most overseas manufacturers benefit from two types of professional support:

US Agent (Mandatory for Foreign Facilities)

* Must be physically located in the US and reachable during US business hours

* Accepts FDA regulatory communications on behalf of your facility

* Does not need to be a regulatory specialist — can be a distributor, importer, or regulatory consulting firm offering US Agent services

* Typical cost: $500-$2,000 per year for a dedicated US Agent service

US Regulatory Consultant (Strongly Recommended)

* A regulatory attorney or specialist with specific dietary supplement FDA expertise

* Advises on NDI status, label compliance, claim substantiation, and FDA enforcement responses

* Key credential to look for: member of the Natural Products Association (NPA), Council for Responsible Nutrition (CRN), or the American Herbal Products Association (AHPA)

* For initial US market entry, budget $5,000-$25,000 for regulatory consulting, depending on formula complexity and claim scope

Frequently Asked Questions (FAQ)

Q: How much does it cost to get FDA-registered as an overseas supplement manufacturer?

A: FDA facility registration itself has no government fee — it is free to register. The costs associated with 'getting FDA-registered' in the practical sense come from cGMP compliance infrastructure: a WHO-GMP audit and certificate typically costs $3,000-$8,000; an NSF/ANSI 455 certification costs $10,000-$25,000+. Annual maintenance costs (biennial registration renewal is free; cGMP re-audits typically run $2,000-$6,000 per year) and US Agent designation ($500-$2,000/year) round out the recurring costs. Budget a total of $15,000-$50,000 for first-year compliance infrastructure if entering the US market as a new overseas manufacturer.

Q: Can a brand owner in the US use an overseas manufacturer who is not FDA-registered?

A: Technically, you can attempt to import from an unregistered facility, but the shipment will be refused at the US port of entry under FDA's import screening process. The importer of record — which is typically the US brand owner — bears legal responsibility for ensuring that imported products comply with all applicable US regulations. Using a non-registered manufacturer does not insulate the US brand; it creates joint liability. The practical answer is: no, a US brand cannot operate sustainably using a non-registered overseas manufacturer.

Q: What is the difference between an FDA Warning Letter and an Import Alert?

A: An FDA Warning Letter is a formal notification to a company (domestic or foreign) that the FDA has identified a significant violation of FDA-regulated regulations. It is a pre-enforcement action giving the recipient an opportunity to voluntarily correct the violations before the FDA pursues formal enforcement. An Import Alert is an operational instruction to US Customs and FDA field offices to detain products or shipments from a specific manufacturer or geographic region, typically issued after a Warning Letter is not adequately addressed or after inspections find serious violations. An Import Alert, particularly a DWPE, effectively blocks all products from the affected facility from entering the US until the alert is resolved.

Q: My supplement contains an ingredient that is common in China but I am not sure about its US status. What do I do?

A: The correct process is: (1) search the FDA's Dietary Supplement Ingredient Advisory List and NDI database to see if the ingredient or a notification about it appears; (2) search for the ingredient in FDA warning letters and import refusal records to identify any prior enforcement history; (3) if status is unclear after step one and two, engage a US regulatory attorney with supplement expertise to provide a written ingredient status opinion — this document becomes part of your compliance file and demonstrates due diligence if ever questioned by FDA. Under no circumstances market a product with a potentially novel ingredient in the US without completing this review.

Q: How often does the FDA inspect overseas supplement manufacturers?

A: FDA foreign facility inspections are far less frequent than domestic inspections due to resource constraints. In practice, many overseas supplement manufacturers are never physically inspected by the FDA — compliance is primarily enforced through import screening, product testing, and consumer complaint tracking. However, FSMA gave the FDA the explicit mandate and funding to increase foreign inspection rates, and facilities in China, India, and Southeast Asia have seen increasing inspection frequency since 2020. More practically, the FDA can refuse import of your products based on documentation review or third-party information without ever physically visiting your facility — the absence of a physical inspection is not evidence of compliance.

Q: Does having a WHO-GMP certificate mean I am automatically cGMP-compliant under US FDA rules?

A: Not automatically, but practically very close. WHO-GMP is widely recognized by the FDA and US buyers as a credible indicator of manufacturing quality. However, WHO-GMP and 21 CFR Part 111 are separate standards with some differences in specific requirements. A facility certified to WHO-GMP standards has typically implemented manufacturing practices that satisfy the intent of 21 CFR Part 111, but a line-by-line comparison will identify some gaps. For most US buyers and for Amazon compliance purposes, a current WHO-GMP certificate from a reputable certifying body (SGS, Intertek, Bureau Veritas) is accepted as adequate evidence of cGMP compliance. For FDA inspection purposes, the relevant standard is 21 CFR Part 111 — not WHO-GMP — and an FDA inspector may cite deficiencies that a WHO-GMP auditor did not.

For FDA registration guidance, cGMP compliance preparation, and US market entry regulatory support, contact Aidacru's regulatory team.