FDA vegan labeling requirements are indirect: the agency has never defined “vegan” through rulemaking, so the word itself is a voluntary marketing claim rather than a regulated term. What the FDA does require is that every packaged food carry a truthful ingredient list, disclose the nine major allergens, and avoid any labeling that misleads consumers. Together, those mandatory rules do most of the work a vegan shopper or a compliance officer needs, and they are the rules a manufacturer has to satisfy before adding a vegan claim on top.
Why the FDA Has No Formal Definition of “Vegan”
The FDA writes binding definitions for some label terms. “Gluten-free,” for instance, is fixed at fewer than 20 parts per million under 21 CFR 101.91.1U.S. Food and Drug Administration. Questions and Answers on the Gluten-Free Food Labeling Final Rule Nothing equivalent exists for “vegan” or “plant-based.” The FDA generally understands “vegan” to mean a product with no animal-derived ingredients, but that understanding has never been codified.
Because there is no standard of identity, these products are treated as non-standardized foods. Each one must carry a common name or a statement of identity that accurately describes what it actually is.2Federal Register. Labeling of Plant-Based Alternatives to Animal-Derived Foods: Draft Guidance for Industry In early 2025 the FDA published draft guidance addressing how plant-based alternatives should be named and labeled, recommending practices for product names that do not confuse consumers.3Food and Drug Administration. Labeling of Plant-Based Alternatives to Animal-Derived Foods Draft guidance is not legally binding, but it signals how the FDA reads existing rules and how it is likely to act.
The absence of a formal definition does not mean manufacturers can use the word freely. Any voluntary label claim still has to be truthful and not misleading under the Federal Food, Drug, and Cosmetic Act. A product labeled vegan that contains dairy or eggs is misbranded, full stop.
Ingredient Listing Rules That Apply to Every Product
Whether or not a product carries a vegan claim, the ingredient list is mandatory. Ingredients must appear in descending order of predominance by weight, with those present at 2 percent or less permitted to be grouped at the end with a quantifying statement such as “Contains 2% or less of.”4eCFR. 21 CFR 101.4 – Food; Designation of Ingredients For anyone trying to confirm a product is genuinely free of animal components, that list is the single most reliable tool, because it reflects a hard legal requirement rather than a marketing decision.
The FDA’s overarching duty is to make sure foods sold in the United States are safe, properly labeled, and not misleading.5Food and Drug Administration. Guidance for Industry: Food Labeling Guide Reading the full ingredient panel is more dependable than trusting front-of-package language alone.
Allergen Disclosures That Flag Animal Ingredients
The Food Allergen Labeling and Consumer Protection Act of 2004 required disclosure of eight major allergens: milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, and soybeans.6Food and Drug Administration. Food Allergen Labeling and Consumer Protection Act of 2004 The FASTER Act added sesame as the ninth, with mandatory labeling effective January 1, 2023.7Food and Drug Administration. The FASTER Act: Sesame Is the Ninth Major Food Allergen
Manufacturers disclose these allergens one of two ways. The source can appear parenthetically next to the ingredient, as in “whey (milk),” or a separate “Contains” statement can list them near the ingredient panel, as in “Contains: Milk, Wheat, Sesame.” Milk and eggs are the two most common animal-derived ingredients in processed foods, and both must be prominently disclosed under this rule. That gives vegan shoppers a federally mandated safety net that operates independently of any voluntary claim on the front of the package.
Undeclared allergens are treated as serious violations. In one enforcement action the FDA sent a warning letter after a single retailer recalled 32 food products in roughly a year for undeclared allergens, including milk and eggs.8Food and Drug Administration. Whole Foods Market 610862 12/16/2020
The Cross-Contamination Gap
Allergen declarations cover ingredients that are intentionally in the product. They do not cover cross-contact from shared equipment or shared facilities. Advisory statements such as “may contain milk” or “produced in a facility that processes eggs” are entirely voluntary. No federal rule requires them, and no rule standardizes their wording or when they must be used.
The FDA has said advisory statements cannot substitute for good manufacturing practices and must themselves be truthful. A manufacturer cannot ignore contamination risks, add a “may contain” line, and be done. The flip side matters for consumers: a product with no advisory statement is not guaranteed free of cross-contact. Third-party vegan certifications often address this more rigorously than federal rules require.
Substantiating a Vegan Claim
When a manufacturer puts “vegan” on a label, the common industry understanding is zero animal ingredients or byproducts. Because the claim is voluntary, the FDA does not prescribe a testing protocol or a threshold. The general misbranding rule governs instead: a food is misbranded if its labeling is false or misleading in any particular.9Office of the Law Revision Counsel. 21 USC 343 – Misbranded Food
Many companies use third-party certifiers to back the claim. These bodies audit ingredient sourcing, manufacturing practices, and cross-contamination controls, then issue a certification mark. The FDA does not require certification, but it creates a documented paper trail showing due diligence, which makes the claim easier to defend if a regulator or consumer challenges it.
The FTC Handles Vegan Advertising
The FDA regulates what appears on a food label. The Federal Trade Commission regulates food advertising, including websites, social media, and television commercials.10Federal Trade Commission. Enforcement Policy Statement on Food Advertising The FTC standard is that an advertisement is deceptive if it contains a claim likely to mislead a reasonable consumer and that claim is material to the purchase. A vegan claim in advertising needs a reasonable basis before it is made.
The FTC has enforced this directly. In 2019 it settled a complaint against a bath and beauty retailer that marketed products as vegan even though certain items contained honey and lactose. The resulting court order bars unsubstantiated vegan claims going forward.11Federal Trade Commission. Truly Organic? The FTC Says No, Alleges Retailer Misled Consumers about Its Products A label that satisfies the FDA will not shield a company from FTC action if its broader marketing overreaches.
State Laws That Add Another Layer
More than 20 states have some form of labeling requirement for alternative proteins, and the number is climbing. Some restrict words like “burger,” “sausage,” or “milk” on plant-based products. Others require disclaimers noting the product does not contain meat or dairy. Court outcomes are mixed. Some restrictions have been struck down on First Amendment grounds, with courts finding that clearly labeled plant-based products are not inherently misleading; others have been upheld. In February 2026, a federal judge struck down a Texas law requiring large-font disclaimers on plant-based meat products. Manufacturers selling nationally have to track these state by state.
Penalties for a False Vegan Claim
The FDA’s usual first step for a misleading label is a warning letter, often followed by a voluntary recall. Most cases end there. For more serious situations the agency can escalate. Federal courts can issue injunctions against ongoing violations,12Office of the Law Revision Counsel. 21 USC 332 – Injunction Proceedings and misbranded food shipped in interstate commerce can be seized and condemned.13Office of the Law Revision Counsel. 21 USC 334 – Seizure
Criminal penalties apply to the worst cases. A first offense for misbranding carries up to one year of imprisonment, a fine of up to $1,000, or both. A subsequent violation after a prior conviction, or one committed with intent to defraud or mislead, raises the ceiling to three years, a fine of up to $10,000, or both.14Office of the Law Revision Counsel. 21 USC 333 – Penalties Deliberately labeling a product as vegan while knowing it contains animal ingredients would sit in that higher tier.