If you’re bringing a new food ingredient to market, one decision shapes your entire compliance timeline: do you pursue a GRAS determination, or do you have to file a formal Food Additive Petition (FAP) with the FDA? Pick wrong and you can lose months — or get your product pulled after launch.
This guide breaks down what separates the two pathways, how to figure out which one applies to your substance, and what’s changing in 2026 that could affect how you plan your next ingredient launch.
Quick Answer
A GRAS (Generally Recognized as Safe) determination is for substances with enough published scientific evidence or pre-1958 history of safe use in food that qualified experts can conclude safety without FDA premarket approval. A Food Additive Petition is required when a substance doesn’t meet that bar — it triggers formal FDA review and rulemaking before the ingredient can legally be used. GRAS is faster and self-directed; an FAP is slower, FDA-controlled, and far more document-intensive.
How the Two Pathways Actually Differ
Under the Federal Food, Drug, and Cosmetic Act, a substance intentionally added to food is regulated as a ‘food additive’ requiring premarket approval unless it falls under GRAS or one of a short list of other statutory carve-outs — prior-sanctioned substances approved before September 1958, color additives, pesticide chemicals, new animal drugs, and certain ingredients used in dietary supplements. Most new functional food ingredients that don’t fit one of those other carve-outs come down to a choice between GRAS and a Food Additive Petition, which is the fork this guide focuses on.
For GRAS, a determination can be made by qualified experts outside of government, based on either ‘scientific procedures’ (the same quality and quantity of evidence an FAP would need, generally from published, peer-reviewed data) or a documented history of common use in food before 1958. Once that determination is made, the substance can go to market without FDA signing off first — though many companies choose to file a voluntary GRAS notice with FDA under the agency’s notification program, since an unreviewed self-affirmed GRAS claim carries more legal and reputational risk if challenged later.
A Food Additive Petition is the mandatory route when the safety evidence doesn’t rise to the GRAS bar, when the intended use is genuinely novel, or when you want the certainty of binding FDA approval. The petitioner has to submit comprehensive safety data showing a ‘reasonable certainty of no harm’ under the intended conditions of use. FDA then conducts its own full review and issues the approval through formal rulemaking, which can also set specific use limits, specifications, or tolerances for the substance.
The practical gap between the two is stark: a GRAS pathway (self-determination plus voluntary notice) commonly runs in the range of several months to around a year or two depending on complexity and whether you notify FDA, while a Food Additive Petition has historically taken several years from filing to market authorization. Cost follows the same pattern — GRAS dossiers are leaner, while FAP submissions require far more extensive toxicology and exposure data and the legal work to assemble it.
Choosing the Right Path for Your Substance
Start by asking whether your substance has a track record. If it’s chemically similar to ingredients already in common food use, or if there’s a solid body of published safety research at your intended use levels, GRAS is usually the appropriate and faster route. If you’re introducing a genuinely new chemical entity, a novel production method (such as a new fermentation or synthesis process), or a use level significantly higher than anything previously studied, you’re more likely looking at an FAP.
Also weigh risk tolerance. A self-affirmed GRAS conclusion that skips FDA notification is legal, but it leaves you exposed if FDA or a competitor later challenges the safety basis — there’s no agency sign-off to point to. Filing a voluntary GRAS notice, or going the FAP route for a borderline substance, buys you a documented FDA position you can rely on in audits, retailer compliance reviews, and litigation.
Watch the regulatory landscape closely right now. In March 2025, HHS directed FDA to examine eliminating the self-affirmed GRAS pathway, and in August 2026 FDA published a proposed rule that would make GRAS notification mandatory rather than voluntary — with a filing review, a substantive review period, and possible extensions before a decision. The rule is still in the comment period as of this writing, but if finalized, it would phase out quiet self-affirmation and require every new GRAS conclusion to go through FDA. If you’re planning a launch more than a year out, build that possibility into your timeline now rather than assuming today’s voluntary rules will still apply.
Tips / Common Mistakes
Don’t assume ‘natural’ or ‘plant-derived’ automatically means GRAS — safety has to be tied to the specific substance and specific use level, not the ingredient category. Don’t skip a literature search before committing to a pathway; a thin evidence base that looks GRAS-eligible on paper can collapse under scrutiny and force a costly pivot to an FAP mid-project. Don’t rely on self-affirmed GRAS alone if the ingredient will be used widely or sold to large retailers — most big buyers now ask for a GRAS notice number or FDA response letter as part of vendor qualification. And don’t wait until your launch date is set to start the GRAS or FAP process; even the faster GRAS route needs lead time for dossier assembly, expert panel review, and — if you notify FDA — the agency’s review window.
Explore more: More packaging and ingredient compliance guides.
GRAS Determination vs. Food Additive Petition FAQs
Can a company decide a substance is GRAS without ever telling the FDA?
Yes, under the current voluntary system — this is called self-affirmed GRAS. It’s legal but carries more risk since there’s no FDA record backing the safety conclusion, and that’s the exact pathway FDA’s 2026 proposed rule aims to make mandatory to notify.
How long does a food additive petition typically take?
Food additive petitions have historically taken several years from submission to final FDA approval, since they require formal rulemaking in addition to the agency’s scientific review.
Is GRAS always faster and cheaper than a food additive petition?
Usually, yes — but only if the substance genuinely qualifies. If the evidence doesn’t support a GRAS conclusion and FDA or a reviewer later disputes it, you can end up spending more time and money correcting course than if you’d filed an FAP from the start.
Does GRAS or a food additive petition cover every new food ingredient?
No. Those two paths cover most newly added functional ingredients, but substances like color additives, pesticide chemicals, new animal drugs, and ingredients regulated as dietary supplements follow separate approval tracks under the FD&C Act rather than GRAS or a food additive petition.
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Photo: The U.S. Food and Drug Administration / Public domain, via Wikimedia Commons.