Starbucks Sugar-Free Drinks Face Lawsuit Over High Sugar Content

Lawsuit claims Starbucks sugar-free drinks contain as much sugar as a Kit Kat bar, sparking consumer backlash.

October 6, 2026 One Min Read

POLICY WIRE — Seattle, United States — A consumer lawsuit has accused Starbucks of misleading customers by labeling certain beverages as sugar-free while containing high levels of sugar, comparable to that found in a Kit Kat bar.

The legal action targets specific products, including hot and iced protein lattes and protein matcha drinks in vanilla and caramel flavors. According to the federal complaint, these drinks contain between 13 to 21 grams of sugar per serving, raising questions about their marketing as sugar-free.

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The lawsuit, filed by Hagens Berman on behalf of three consumers from California, New York, and Washington, argues that the product names are deceptive. The law firm emphasized that the case focuses on mislabeling rather than missing nutritional information. Starbucks maintains that the sugar comes from its protein-boosted milk and that no additional sugar is added to the drinks.

Reporting by Policy-Wire (PW)

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