David Protein is facing a proposed class action that challenges the nutritional accuracy of one of the most talked about protein bars in the health and fitness market. The suit, filed on January 23 in the U.S. District Court for the Southern District of New York, accuses Linus Technologies Inc., the food technology company behind David, of mislabeling the calorie and fat content of its bars.
The brand built its entire identity around an extraordinary nutritional claim: 28 grams of protein, 150 calories, and 0 grams of sugar per bar, marketed as one of the highest protein to calorie ratios available. That promise is now at the center of a legal dispute.
What the Plaintiffs Are Claiming
Lead plaintiff Daniella Lopez, joined by David Freifeld and Crystal Paterson, alleges that independent lab testing using the Atwater factors method, a widely accepted method for calculating food energy, found the bars contain between 268 and 275 calories, up to 83% more than the labeled 150 calories.
Fat content tells an even starker story. The lab results reportedly found fat ranging from 11.8 to 13.5 grams per bar, compared to the 2 grams stated on the label, representing up to 400% more fat than advertised. The complaint states these discrepancies far exceed the FDA’s permitted margin of error, which allows labeled caloric content to be within 20% of the measured amount.
Flavors named in the complaint include Chocolate Chip Cookie, Cinnamon Roll, and Fudge Brownie. The plaintiffs argue that health-conscious consumers who rely on precise nutritional data would not have purchased the bars or would have paid less had the labels been accurate. The suit seeks to represent anyone who purchased the bars across the United States, California, Illinois, and New York.
The Brand Pushes Back Hard
David is not staying quiet. A spokesperson told Athletech News, “The lawsuit is based on a scientific misunderstanding about how calories are measured.”
The brand contends that the testing method used by the plaintiffs does not accurately reflect how the human body actually absorbs and uses energy, particularly when it comes to certain ingredients like EPG, or esterified propoxylated glycerol, a modified plant based fat alternative that David uses in its bars and that is said to pass through the digestive system without being metabolized.
The brand’s position is that EPG is classified differently under FDA labeling guidance and that the calorie count for such ingredients should reflect their physiological energy value rather than their chemical energy content. “The David bar is 150 calories, and we stand behind the accuracy of our labeling,” the spokesperson said.
David’s founder also addressed the lawsuit publicly, writing that it “rests on a flawed and misleading interpretation of how calories are determined for certain ingredients under U.S. food labeling regulations.”
Why the Case Goes Beyond One Brand
At stake here is more than a legal dispute over a protein bar. The case highlights a growing tension in the health food and supplement market around whether nutritional labeling practices are keeping pace with novel ingredient technology.
David’s use of EPG is central to the argument on both sides. If the courts find that the ingredient’s caloric contribution should be calculated as the plaintiff’s claim, it would have implications far beyond David and could reshape how manufacturers of functional foods and novel fat substitutes are required to label their products.
For consumers, the case adds to an already shaky trust environment in the supplements space. A Thorne report last year found that 57% of respondents were unsure which supplement products were best suited to their needs, while 56% said there was too much conflicting information in the category.
What Brands Can Learn From This
The David Protein lawsuit is a reminder that innovation in ingredients cannot outpace clarity in communication. As functional food brands push further into novel materials and proprietary formulations, the gap between how a product is engineered and how its label is understood by the average consumer becomes both a legal and a trust risk.
A few lessons stand out for brands operating in this space:
- Get ahead of novel ingredient labeling. If your product relies on an ingredient that is calculated differently under FDA guidance than standard methods would suggest, that distinction needs to be explained proactively, not only when a lawsuit forces the conversation.
- Transparency builds the brand. In a category where 57% of consumers already feel unsure about supplement accuracy, a clear and accessible explanation of how your nutrition facts are derived is a competitive advantage, not just a compliance requirement.
- Consumer perception is its own standard. Even if David ultimately prevails on the science, the reputational cost of a lawsuit centered on a brand promise as specific as 150 calories is significant. When a product’s entire identity rests on a number, that number needs to be bulletproof.
- Anticipate regulatory evolution. Novel fat substitutes like EPG exist in a labeling grey area that regulators have not yet fully addressed. Brands using similar ingredients should actively monitor FDA guidance and prepare for a future in which the rules may tighten.
