Starbucks Faces Class Action Lawsuit Over Sugar Free Drink Labeling

A proposed federal class-action lawsuit accuses Starbucks of deceptive marketing for labeling eight protein drinks as sugar-free despite each containing up to 21 grams of sugar per serving.

Coffee giant Starbucks is facing fresh legal scrutiny over how it markets its functional beverage menu to health-conscious coffee drinkers. Last Friday, a proposed federal class-action lawsuit was filed against Starbucks Corporation in the U.S. District Court for the Western District of Washington. The complaint accuses the Seattle-based chain of false advertising and unfair trade practices, alleging that Starbucks sells eight hot and iced protein beverages under official "Sugar-Free" product names despite each serving containing between 13 and 21 grams of sugar.

Inside The Eight Targeted Protein Beverages

Filed by law firms Hagens Berman and Sterlington PLLC on behalf of consumers across California, New York, and Washington, the lawsuit challenges menu additions introduced during Starbucks' functional drink push. It targets hot and iced variations of four key recipes: Sugar-Free Vanilla Protein Latte, Sugar-Free Caramel Protein Latte, Sugar-Free Vanilla Protein Matcha, and Sugar-Free Caramel Protein Matcha. According to court documents, a venti Sugar-Free Caramel Protein Matcha contains 21 grams of sugar—roughly equal to five teaspoons of sugar or a standard Kit Kat bar.

While Starbucks prepares these beverages using sugar-free flavored syrups, plaintiffs contend that the milk ingredients introduce substantial natural lactose sugars into the final drink. The suit claims federal regulations prohibit labeling products "Sugar-Free" if a serving exceeds 0.5 grams of sugar, while alleging Starbucks omitted required calorie disclosure warnings on promotional displays.

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Starbucks Defense And Legal Remedies Sought

The lawsuit seeks monetary damages and restitution for U.S. consumers, alongside a court injunction barring Starbucks from describing drinks containing sugar as "sugar-free." In response, Starbucks pushed back against the allegations, maintaining that complete nutritional facts are accessible to every customer.

"We believe these claims have no merit," stated a Starbucks spokesperson in an official corporate statement. "Starbucks has consistently and clearly provided information about its protein beverages, sugar-free options, customization choices, and nutritional content across product announcements, menus, marketing materials, Starbucks.com, and the Starbucks app."