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According to the article, Starbucks is facing a proposed class-action lawsuit from consumers who accuse the coffee chain of falsely advertising eight protein beverages as "sugar-free," even though they allegedly contain 13 to 21 grams of sugar.

The lawsuit, filed on October 2 in federal court in Seattle, Washington, alleges the drinks contain lactose, a naturally occurring sugar in milk. The plaintiffs argue consumers would not reasonably expect beverages with "sugar-free" in their names to contain that much sugar.

According to the lawsuit, federal regulations prohibit using "sugar-free" on beverages containing more than 0.5 grams of sugar per 12-ounce serving. The plaintiffs also allege Starbucks failed to provide required disclaimers stating the drinks are not low-calorie foods or intended for weight control.

Starbucks disputes the allegations and intends to defend itself. According to the company, “(w)e believe these claims have no merit.” Starbucks said it has consistently provided information about the beverages, including their nutritional content, through its menus, marketing materials, website and app.

Which Starbucks Drinks are Named in the Lawsuit?

The lawsuit names eight beverages in Starbucks' protein line:

  • Sugar-Free Vanilla Protein Latte
  • Sugar-Free Caramel Protein Latte
  • Sugar-Free Vanilla Protein Matcha
  • Sugar-Free Caramel Protein Matcha
  • Iced Sugar-Free Vanilla Protein Latte
  • Iced Sugar-Free Caramel Protein Latte
  • Iced Sugar-Free Vanilla Protein Matcha
  • Iced Sugar-Free Caramel Protein Matcha

Starbucks introduced the protein beverages in September 2025 as part of its "Back to Starbucks" updated menu.

How much Sugar Is in the Drinks?

The lawsuit alleges the beverages contain 13 to 21 grams of sugar per 20- or 24-ounce venti serving.

For example, Starbucks' website lists 16 grams of sugar in a 16-ounce Sugar-Free Caramel Protein Matcha and 21 grams in a 20-ounce version. The product is described as having "No Added Sugar."

The company said the sugar comes from the protein-boosted milk used in the drinks. Starbucks said it does not add sugar to the beverages and uses sugar-free syrup for flavoring.

The lawsuit alleges Starbucks' use of "sugar-free" could mislead consumers who are trying to reduce their sugar intake.

What is the Lawsuit Seeking?

The lawsuit seeks monetary damages for consumers who bought the beverages and alleges Starbucks violated state laws protecting customers from false or misleading advertising.

The plaintiffs also want Starbucks to stop calling the drinks "sugar-free" if they contain sugar.

Discussion Questions

  1. What is a class action lawsuit, and why was this case filed in federal court?

    A class action lawsuit allows many people with similar legal claims to combine them into one case rather than filing hundreds or thousands of individual lawsuits. In a class action, a representative plaintiff, or a small group, files a single lawsuit on behalf of all affected individuals, known as “class members.”

  2. According to the article, federal regulations prohibit using "sugar-free" on beverages containing more than 0.5 grams of sugar per 12-ounce serving. Specifically, what federal regulations pertain to this lawsuit?
    The “sugar-free” nutrient content claim is regulated under the Federal Food, Drug, and Cosmetic Act (FD&C Act), and the Food and Drug Administration’s (FDA’s) nutrient content claim rules in 21 Code of Federal Regulations (CFR) 101.13 and Subpart D, which set a maximum of 0.5 grams of sugar per reference serving for a product to be legally labeled “sugar-free."

  3. In your reasoned opinion, does this claim have merit, or is it “much ado about nothing?”

    This is an opinion question, so student responses may vary.

    In your author’s opinion, this case is a “toss-up.” As mentioned in the article, the lawsuit alleges that the subject beverages contain 13 to 21 grams of sugar per 20- or 24-ounce venti serving, despite the fact that the product is described as having "no added sugar." Starbucks claims the sugar comes from the protein-boosted milk used in the drink, that it does not     add sugar to the beverages, and that it uses sugar-free syrup for flavoring. The lawsuit alleges Starbucks' use of "sugar-free" could mislead consumers who are trying to reduce their sugar intake. The crux of this lawsuit essentially comes down to the question of whether using milk, which has a naturally occurring sugar (lactose), constitutes “added sugar.”