Quick answer: GRAS peptides are food ingredients, such as collagen and protein hydrolysates, that qualified experts generally recognize as safe for a specific use in food under 21 CFR 170.30.[1] FDA has issued “no questions” letters on several, including hydrolyzed pork cartilage (GRN 713, 2018) and a fermentation-made collagen polypeptide (GRN 1171, 2024).[4][5] Injectable peptides such as BPC-157 cannot be GRAS, because GRAS is a status for substances added to food, not for drugs.
This guide explains what GRAS means, how it differs from dietary supplement and drug status, and how to check a GRAS claim. For related rules, see our FDA and regulation hub.
What GRAS means under federal law
The Federal Food, Drug, and Cosmetic Act defines a “food additive” broadly, then carves out substances that are generally recognized as safe for their intended use.[8] A GRAS substance can be added to food without going through FDA’s food additive petition process.
FDA’s regulation at 21 CFR 170.30 sets the conditions:[1]
- Expert consensus. GRAS status must rest on the views of qualified experts, and there must be common knowledge across the scientific community that the substance is not harmful under its intended use.
- Two routes. Recognition can come from scientific procedures, which require the same quantity and quality of evidence as a food additive approval, or from common use in food before January 1, 1958.
- Use-specific. GRAS status attaches to a substance for a particular use and level. A protein that is GRAS in a granola bar is not automatically GRAS in an energy drink at ten times the amount.
Companies can tell FDA about a GRAS conclusion through the voluntary GRAS notification program. FDA then responds with a letter, often saying it has “no questions” about the company’s conclusion.[2] That response is not an approval.
GRAS vs dietary supplement vs drug
The same peptide can fall into very different legal boxes depending on how it is made, sold and used.
| Status | Main law | What FDA reviews before sale | Example peptide products |
|---|---|---|---|
| GRAS food ingredient | FD&C Act food additive definition; 21 CFR 170.30 | Nothing required; voluntary GRAS notice | Collagen hydrolysate in a protein bar |
| Dietary supplement | DSHEA 1994; 21 USC 321(ff) | New dietary ingredient notification for some ingredients | Collagen peptide capsules |
| Drug | FD&C Act drug definition; 21 USC 321(g) | New drug application and clinical trials | Semaglutide, teriparatide |
A product is a drug if it is intended to diagnose, treat, mitigate or prevent disease, or to affect the structure or function of the body other than as food.[8] Supplements are a separate category, explained in our guide to DSHEA and peptide supplements. One link between them: a supplement ingredient that has been present in the food supply as food, without chemical alteration, is exempt from the new dietary ingredient notification requirement.[9]
Which peptide ingredients have GRAS notices
We searched FDA’s GRAS Notice Inventory in October 2026.[3] Searching “peptide” returned one entry by name; most peptide-rich ingredients are listed as protein hydrolysates or collagen. Examples, all closed with an FDA “no questions” letter:
| GRN | Ingredient | Closed | Intended use (summary) |
|---|---|---|---|
| 1171 | Collagen polypeptide made by E. coli K-12 fermentation | Oct 22, 2024 | Source of collagen polypeptides in various foods at specified maximum levels[5] |
| 713 | Hydrolyzed pork cartilage | Apr 5, 2018 | Nutrition and granola bars, fortified waters and milk drinks, sports gels and gummies, up to 5.0%[4] |
| 360 | Hydrolyzed sardine protein | May 16, 2011 | Beverages, cereals, dairy, soups, juices and other foods[6] |
| 199 | Concentrated hydrolyzed milk protein | May 11, 2007 | Juices, yogurt, bars, cereals, dairy drinks and other foods[7] |
A few points about this list:
- It is not complete for collagen. Many collagen and gelatin products are sold on self-affirmed GRAS conclusions that were never notified to FDA, so they do not appear in the inventory at all.
- Each notice covers one company’s ingredient. GRN 713 covers a specific hydrolyzed cartilage made a specific way. It does not make every “collagen peptide” GRAS.
- “Bioactive” short peptides are rare. We found no GRAS notices for the short signaling peptides discussed on this site, such as GHK-Cu, KPV or epitalon.
Why injectable peptides can’t be GRAS
GRAS is a food concept from start to finish. Three parts of the law block injectable research peptides from using it:
- GRAS is an exception to the food additive definition. It only matters for a substance whose intended use results in it becoming a component of food.[8] A vial meant for injection is not food.
- Intended use decides the category. A product meant to heal tendons, spur growth hormone or affect metabolism is a drug under 21 USC 321(g), however it is labeled.[8]
- No common use in food, and no expert consensus. Synthetic peptides such as BPC-157 were not eaten before 1958, and there is no published body of evidence that experts would accept as showing safety. FDA’s own compounding review said it had no or only limited safety information for BPC-157 by its proposed routes.[11]
So “GRAS peptides” and “injectable peptides” are different products under different rules. The legal questions for injectables are about drug approval, compounding and research use only labeling. Our FDA peptide ban 2026 guide covers that side.
The 2026 proposal to end self-affirmed GRAS
GRAS is changing. FDA published a proposed rule, “Substances Generally Recognized as Safe,” in the Federal Register on August 11, 2026 (Docket FDA-2025-N-3262). If finalized, companies would have to file GRAS notices for substances they self-determine to be GRAS, unless an exception applies.[10]
- Comments are due December 9, 2026.
- It is not a premarket approval system. Companies could still market a substance while FDA reviews its notice.[10]
- Current rules still apply until a final rule takes effect, and the agency’s legal authority to require notification is expected to be challenged.
For collagen sellers, this could mean many ingredients now sold on self-affirmed GRAS would appear in FDA’s inventory for the first time. It would not change the status of injectable peptides.
How to check a GRAS claim yourself
- Find the GRN number on the company’s site or ask for it.
- Look it up in FDA’s GRAS Notice Inventory and open FDA’s response letter.[3]
- Confirm the letter says FDA has “no questions,” not that the notice was withdrawn or that FDA ceased evaluation.
- Compare the notified use and level with the product in front of you.
For more on how peptide rules developed, see our peptide regulation history and peptide quality standards guides.
This is general information, not legal advice. GRAS status depends on the specific ingredient, use and level, and the rules are under active revision.
