Protein bar label requirements

That last rule is where bar startups get hurt. You can put 20 g of protein in a bar, print "20g protein" truthfully, and still be barred from calling it "high protein."

Nutrition Facts or Supplement Facts? The honest answer

This is genuinely contested, and anyone who tells you it's obvious is selling something.

The statute is 21 U.S.C. 321(ff). A dietary supplement is a product intended to supplement the diet, bearing a dietary ingredient, "intended for ingestion in a form described in section 350(c)(1)(B)(i)" — tablet, capsule, powder, softgel, gelcap, liquid — that is "not represented for use as a conventional food or as a sole item of a meal or the diet" and is "labeled as a dietary supplement."

A bar is not a tablet. So a bar only qualifies through the second door: not a conventional supplement form, but also not represented as a conventional food. That's a marketing test, not a chemistry test, and it's why two bars with nearly identical formulas can legitimately carry different panels.

FDA has never issued bar-specific guidance. The closest analogue is its 2014 guidance Distinguishing Liquid Dietary Supplements from Beverages, which lays out the factors FDA weighs in deciding whether a product is "represented as a conventional food." They transfer to bars almost line for line:

• Labeling and advertising — "statements and graphics on product labels, labeling, and advertising, including Web sites and social media."
• The product name. "Snack bar," "breakfast bar" or "brownie" points to conventional food.
• Packaging, including "whether it is reclosable or designed to be consumed in a single serving."
• Serving size, directions and marketing practices. A product recommended as a meal, or promoted on "taste, refreshment," is a food. "Take one daily" reads differently from "enjoy after your workout."
• Composition — a product "essentially a copy of a common" food with a dietary ingredient added.

Run your own bar through that list. Most protein and energy bars fail it decisively on the food side: sold in the snack aisle, marketed on flavor, eaten as a snack or breakfast, named after desserts. They are conventional foods and they take Nutrition Facts.

The grey zone is narrow — a bar sold only through a supplement channel, labeled "dietary supplement," dosed rather than eaten. If that's you, read Supplement Facts vs Nutrition Facts and Supplement Facts label requirements, and understand the trade: you gain structure/function claims with their mandatory disclaimer, and you take on DSHEA obligations and lose the ability to market the product as food.

What isn't contested: you don't get to pick the panel because you like how it looks. The panel follows the representation, and the representation is everything you say about the product, everywhere.

The protein claim rule that catches everyone

Here's the sequence, in order, because each step depends on the one before it.

Step 1: the grams on the panel are not corrected

21 CFR 101.9(c)(7) requires "a statement of the number of grams of protein in a serving, expressed to the nearest gram," and FDA permits that figure to come from the standard method — total nitrogen multiplied by 6.25. Digestibility never enters into it. The Ninth Circuit confirmed as much in Nacarino v. Kashi Co. (2022): the regulations "authorize the nitrogen-content method and do not require manufacturers to adjust statements of protein quantity for digestibility." So "20g protein" on the wrapper, matching a panel that says 20 g, is fine.

Step 2: making a protein claim forces a %DV onto the panel

21 CFR 101.9(c)(7)(i) makes the percent Daily Value for protein optional in general, which is why most panels leave it blank. But the same paragraph says that statement "shall be given if a protein claim is made for the product, or if the product is represented or purported to be specifically for infants through 12 months or children 1 through 3 years of age." Say "high protein," "excellent source of protein," or otherwise characterize the level, and the protein %DV becomes mandatory.

Step 3: the %DV must be PDCAAS-corrected

This is the part that bites. Under 101.9(c)(7)(ii), the %DV is calculated not on the grams you declared but on the corrected amount of protein per serving: actual grams multiplied by the protein digestibility-corrected amino acid score, capped at 1.00, using the methods in the Report of the Joint FAO/WHO Expert Consultation on Protein Quality Evaluation incorporated by reference in the regulation.

PDCAAS is two things multiplied together: the amino acid score, set by the protein's most limiting indispensable amino acid, and true digestibility. A protein missing an indispensable amino acid outright scores at or near zero on the first component no matter how much you use — the mechanism that disqualifies collagen and gelatin, which contain no tryptophan. Dairy and soy isolates land at or near the 1.00 cap; blends built around rice, wheat gluten, hemp or pumpkin seed land well below it. The gap between the number on the wrapper and the number the regulation makes you compute is not small.

Step 4: the threshold is per RACC, not per bar

21 CFR 101.54(b) defines "high," "rich in," "excellent source of" as 20% or more of the DV per reference amount customarily consumed; 101.54(c) puts "good source," "contains," "provides" at 10% to 19%. 21 CFR 101.13(b) requires claims to be evaluated against the reference amount, not against your bar, if your bar is bigger. The Daily Value for protein is 50 g and the RACC for grain-based bars is 40 g, so:

Work a real example. A 60 g bar with 20 g of protein from a pea-and-rice blend:

1. Per RACC: 20 g × (40 ÷ 60) = 13.3 g of raw protein per 40 g.
2. Apply the PDCAAS for your actual blend. At 0.75, that's 10.0 g corrected — exactly at the line. At 0.70, it's 9.3 g, or 18.6% DV.
3. 18.6% is not 20%. "Good source of protein." Not "high protein."

Two points of digestibility decided whether the claim on your wrapper is legal. The same formula built on whey isolate clears 20% with room to spare, which is exactly why so many plant-based bars quietly stop at "good source."

Two consequences worth planning for. Get the PDCAAS number before you design the package, from your protein supplier or a lab — it's an input, not an afterthought. And under 21 CFR 101.9(j)(18), any protein claim voids the small business exemption for that product, on the label, in labeling, or in advertising. Details in why "high protein" voids your FDA exemption.

Serving size, RACC, and the dual-column trap

Bars fall under the grain-based bars category in Table 2 of 21 CFR 101.12 — "breakfast bars, granola bars, rice cereal bars," reference amount 40 g. FDA's RACC product-category guidance lists "all types of breakfast bars, granola bars, multi-grain bars, trail mix bars" there. Grain-free fruit-and-nut bars are a judgment call — "nuts and seeds, all types" and "cookies" are both 30 g. Use the method in our RACC guide: match on dietary usage, product characteristics and consumed amount, then write your reasoning down and keep it in your label file.

For a discrete unit like a bar, 101.9(b)(2)(i) decides the serving:

The 80 g to 120 g band is the bar trap — roughly 2.8 to 4.2 ounces, precisely the size of a meal-replacement or double-size bar. Land there and 101.9(b)(12)(i) requires a dual-column panel: one column per serving, one for the entire package. A single column is non-compliant, and a missing dual column is a documented Amazon suppression trigger. Mechanics in dual column nutrition label requirements.

Multi-bar boxes are different. A 12-count carton of individually wrapped 50 g bars is not a product "packaged and sold individually" in the sense 101.9(b)(12)(i) means. Each bar is the discrete unit, the serving is one bar, and the carton declares 12 servings per container in a single column. The dual-column question is about one big bar, not a box of normal ones.

Added sugars: dates, syrups and juice concentrate

Bars are a sugar-declaration minefield because the sweetness usually comes from fruit, and 21 CFR 101.9(c)(6)(iii) treats different forms of fruit very differently.

• Whole dates, date paste, fruit purees, raisins: sugars intrinsic to the fruit. Not added sugars. The "dates, egg whites, nuts" formula genuinely does declare 0 g added sugars — not a loophole, the regulation working as written.
• Date syrup, brown rice syrup, tapioca syrup, honey, agave, maple: all added sugars, in full. Syrups are named in the definition.
• Fruit juice concentrate used as a sweetener: added sugars only to the extent it exceeds what the same volume of 100% single-strength juice would have contained. Use the Brix values in 21 CFR 101.30 as the baseline and keep the calculation in your records under 21 CFR 101.9(g)(10).
• Sugar inside a compound ingredient — the chocolate coating, the yogurt drizzle, the caramel layer. The most common miss on a bar panel, because the maker totals what they poured in and forgets the coating.

Full treatment in added sugars label requirements. Two related lines:

Sugar alcohols. Erythritol, maltitol, xylitol and allulose get their own voluntary line at 101.9(c)(6)(iv) — which becomes mandatory the moment you claim anything about sugar alcohols, total sugars, or added sugars. "No sugar added," "keto," "0g sugar": each turns the line on. Allulose is chemically a sugar but FDA permits excluding it from both sugar lines.

Fiber. Not every non-digestible carbohydrate is legally dietary fiber. 21 CFR 101.9(c)(6)(i) defines it as fiber intrinsic and intact in plants, plus isolated or synthetic non-digestible carbohydrates "determined by FDA to have physiological effects that are beneficial to human health." The codified list is seven: beta-glucan soluble fiber, psyllium husk, cellulose, guar gum, pectin, locust bean gum and hydroxypropylmethylcellulose. FDA has since announced its intent to add eight more, inulin and polydextrose among them. If your bar's fiber comes from chicory root or soluble corn fiber, check the current status before you build "10g fiber" into your front-of-pack.

One more that catches keto bars: "low sugar" is not a defined claim. 21 CFR 101.60(c) defines "sugar free," "no added sugars" and "reduced sugar," and 21 CFR 101.13(b) bars characterizing a nutrient level with terms the regulations don't define.

Allergens, including sesame

Bars are the highest-risk allergen category in packaged snacking: nuts, dairy protein, soy, egg white, wheat and — increasingly — sesame, all inside one 50 g unit.

FALCPA covers nine major allergens: milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans, and sesame, added by the FASTER Act effective January 1, 2023. Two legal ways to declare: parenthetically inside the ingredient list — "whey (milk)," "tahini (sesame)" — or a "Contains" statement immediately after it. Tree nuts, fish and shellfish must be named by species: "almonds," not "tree nuts." "May contain" is voluntary, not a substitute for either method, and it does not cover an allergen that's actually in the formula.

Sesame is the live issue for bar makers. It arrives through tahini, sesame flour, halva-style inclusions and seed blends — and after the FASTER Act some manufacturers began intentionally adding sesame flour so a blanket "contains sesame" declaration would be accurate. If you buy an inclusion or a coating from a supplier, re-pull the spec sheet. Formatting details in how to write a Contains statement.

Do you even need a panel yet?

Maybe not. Under 21 CFR 101.9(j)(18) you're exempt from nutrition labeling with fewer than 100 full-time equivalent employees and fewer than 100,000 units sold in the US in a 12-month period, on an annual notice filed with FDA — and FDA is blunt about the follow-up: "FDA DOES NOT NOTIFY FIRMS WHEN IT IS TIME TO FILE A NOTICE." A smaller carve-out needs no filing at all: not an importer, fewer than 10 employees, fewer than 10,000 units a year.

Then the catch, and for a bar it's fatal: the exemption is void for any product bearing a nutrient content claim, a health claim, or other nutrition information — on the label, in labeling, or in advertising. A bar whose name contains the word "protein" is making a claim. Your Amazon bullets count; your Instagram counts. Almost no protein bar brand can use this exemption, because the claim is the product. See the FDA small business exemption explained.

Cottage food: bars are usually allowed, claims usually aren't

Unlike jerky, a shelf-stable grain-based bar is eligible in most state cottage food programs. What ends the exemption is the word "protein" on the wrapper.

No state requires a Nutrition Facts panel on cottage food. You need one when:

1. You make a nutrient content claim ("high protein," "low sugar," "keto," "sugar free")
2. You make a health claim
3. You outgrow your state's cottage food cap and move to a commercial kitchen
4. You sell wholesale or into retail — cottage exemptions are almost universally direct-to-consumer only
5. You sell on Amazon or another marketplace that requires a panel

For a protein bar, trigger one fires on day one. Verify your state's current rules with the agency that administers the program; these statutes get amended constantly.

What a bar panel costs

Read the extension line carefully: +$40 per size, and a bar line is rarely one SKU. Four flavors is four panels; add a king-size format and it's eight, one of which may be dual-column. Full comparison in what a nutrition label actually costs. One place a lab still earns its fee: substantiating a borderline protein claim. If your corrected protein lands within a point of the 20% line, a database calculation is not the document you want to be holding — see lab testing vs software.

Nutrillius builds the panel from your recipe in about a minute: RACC-derived serving size, FDA rounding, added sugars, the allergen declaration by either legal method, and dual columns automatically when your bar lands in the 80–120 g band. $39 one time, or $69/month for unlimited labels.

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