If you are building a supplement brand with a proprietary formula and sourcing from a Chinese OEM manufacturer, there is one regulatory milestone you cannot afford to overlook: the NDI (New Dietary Ingredient) Notification. Under FDA's Dietary Supplement Health and Education Act (DSHEA) of 1994, any dietary supplement ingredient that was not marketed in the …
If you are building a supplement brand with a proprietary formula and sourcing from a Chinese OEM manufacturer, there is one regulatory milestone you cannot afford to overlook: the NDI (New Dietary Ingredient) Notification.
Under FDA’s Dietary Supplement Health and Education Act (DSHEA) of 1994, any dietary supplement ingredient that was not marketed in the United States before October 15, 1994 is classified as a “new dietary ingredient.” Manufacturers and brands must submit an NDI Notification to the FDA at least 75 days before introducing such an ingredient into the U.S. market. Failure to do so is one of the most common — and most costly — compliance violations for international supplement companies entering the American market.
This guide breaks down the NDI notification process step by step, so you know exactly what is required, what documentation your OEM partner must prepare, and how to avoid the most frequent mistakes.
## What Is a “New Dietary Ingredient”?
The FDA defines a dietary ingredient as:
– Vitamins, minerals, herbs and other botanicals
– Amino acids and dietary substances for use by man to supplement the diet
– Concentrates, metabolites, constituents and extracts of any of the above
An ingredient is “new” if it was not present in the food supply in a dietary supplement form prior to October 15, 1994. This includes:
– Novel botanical extracts with no prior history in supplements
– Synthesized forms of ingredients not previously used in supplements
– Probiotic strains not documented in the FDA’s Inventory of Food Contact Substances
– Ingredients derived from new extraction or processing methods that alter the ingredient’s chemical identity
Even ingredients that are widely used in other countries — such as specific ashwagandha extracts, curcumin formulations, or certain mushroom extracts — may require an NDI Notification if they lack a history of use in U.S. supplements.
## The NDI Notification Submission Process
### Step 1: Conduct a “History of Use” Analysis
Before submitting an NDI Notification, determine whether your ingredient truly qualifies as “new.” This requires:
– A thorough review of published literature on the ingredient’s use in dietary supplements globally
– Evidence of use in food or supplements in other markets (Japan, EU, Australia)
– Documentation of safe use duration and population exposure
If the ingredient has a documented history of use in supplements outside the United States for at least 75 days of reasonable continuous marketing, it may be eligible for the “history of use” exemption — though the FDA expects robust evidence.
### Step 2: Prepare the NDI Notification Dossier
The NDI Notification must include:
**A. Identity and Characterization**
– Full chemical name, molecular structure, and CAS number
– Manufacturing process description including source materials, extraction methods, and any solvents used
– Specifications for identity, purity, and composition
– Analytical methods for detecting and quantifying the ingredient
**B. History of Use or Basis for Conclusion of Safety**
– For history-of-use claims: evidence of sale and use in other countries
– For safety-based notifications: a comprehensive safety dossier including toxicological studies, genotoxicity data, subchronic and chronic toxicity reports, and human clinical trial data if available
– Proposed level of use in the finished supplement
**C. Labeling Information**
– How the ingredient will be listed in the Supplement Facts panel
– Directions for use
– Any required cautions or warnings
### Step 3: Submit to the FDA
NDI Notifications are submitted electronically through the FDA’s portal. The submission must include a completed Form 3487 and all supporting documentation. The FDA has 75 days to review the submission. If the agency does not object within 75 days, the manufacturer may proceed — but this is not an approval. The FDA may request additional information, raise safety concerns, or determine that the ingredient does not qualify as a dietary ingredient.
### Step 4: Respond to FDA Feedback
The FDA frequently issues “incomplete” letters or requests for additional information. This is normal. Brands and their OEM partners must be prepared to respond with additional safety data, modified specifications, or clarifications on the manufacturing process. This can add 3 to 6 months to the timeline.
## Common NDI Notification Mistakes to Avoid
**1. Assuming GRAS equals NDI compliance:** Just because an ingredient has GRAS (Generally Recognized As Safe) status for food use does not mean it is automatically cleared for supplement use. Separate analysis is required.
**2. Underestimating the timeline:** NDI preparation and FDA review can take 6 to 12 months or longer. Brands should not plan a U.S. launch without factoring this into their timeline.
**3. Insufficient safety data:** Many NDI Notifications are rejected or challenged because the safety dossier lacks adequate toxicological evidence. Work with experienced food safety toxicologists.
**4. Vague manufacturing descriptions:** The FDA requires detailed process documentation. A general description of “plant extract” is insufficient. You need solvent percentages, temperature ranges, and purification steps.
**5. Forgetting to notify your OEM partner:** Your contract manufacturer must be aligned on the NDI status of every ingredient in your formula. Ingredient substitution by the factory — even with a “similar” grade — could invalidate your notification.
## How Your OEM Partner Should Support NDI Compliance
A qualified Chinese OEM manufacturer should be able to provide:
– Full ingredient identity and COA (Certificate of Analysis) for every raw material
– Detailed manufacturing process documentation in English
– Third-party laboratory testing for heavy metals, pesticides, and microbial contaminants
– DMF (Drug Master File) or Technical File documentation for active ingredients
– Support for stability studies and shelf-life validation
At Zuoning Bio, we work with international supplement brands to prepare complete NDI-ready documentation packages. Our quality team coordinates directly with your regulatory consultants to ensure that every ingredient in your custom formula meets U.S. FDA requirements before production begins.
## Key Takeaways
– NDI Notification is a mandatory pre-market requirement for any new dietary ingredient in the U.S.
– The process requires a comprehensive safety dossier, detailed manufacturing documentation, and at least 75 days of FDA review time
– Common mistakes — including insufficient safety data and vague process descriptions — cause delays and rejections
– A compliant OEM partner is essential for preparing NDI-ready documentation and maintaining ingredient consistency across production batches
If you are developing a custom supplement formula for the U.S. market, do not wait until production is complete to address NDI compliance. Engage your regulatory team early, and partner with a manufacturer who understands the full scope of FDA requirements.
**Ready to start?** Contact our team today.
📧 Wade@zuoningbio.com | 📞 +86 187 5469 6289 | 🌐 www.zuoningbio.com
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*Zuoning Bio (Dongying Zuoning Biotechnology Co., Ltd.) is a professional supplement OEM/ODM manufacturer based in Shandong, China, serving international brands with GMP-certified production, custom formulation development, and full regulatory support.*
