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Starbucks sued over 'sugar-free' claims for protein beverages

The proposed class action says eight drinks had 13 to 21 grams of sugar per venti serving and lacked required weight-control disclaimers.

  • On Friday, a proposed class-action lawsuit filed in Seattle federal court accused Starbucks of falsely advertising eight protein beverages as "sugar-free" when they contain 13 to 21 grams of naturally occurring sugar per serving.
  • Federal law prohibits labeling beverages "sugar-free" if they contain more than 0.5 grams of sugar per 12-ounce serving, yet the complaint alleges Starbucks' drinks exceed this limit due to lactose, a natural sugar in milk.
  • Consumers allege Starbucks targeted 75% of Americans seeking to reduce sugar intake with eight items including the Sugar-Free Vanilla Protein Latte, which "venti" servings contain 270 to 340 calories.
  • Plaintiffs also argue Starbucks violated labeling rules by omitting mandatory disclaimers clarifying the beverages are not low-calorie or meant for weight control; Starbucks had no immediate comment on Monday.
  • Food producers are regularly sued for alleged false advertising over "sugar-free" or "zero sugar" claims, with dozens of recent cases challenging products containing sugar substitutes or lacking required nutritional disclosures.
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The Toronto StarThe Toronto Star
+6 Reposted by 6 other sources
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A lawsuit accuses Starbucks of mislabeling 8 ‘sugar-free’ protein drinks

Starbucks is facing a consumer lawsuit over claims that the protein drinks labeled “sugar-free” on its cafe menus may actually contain more sugar than a Reese’s peanut butter cup.

·Toronto, Canada
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Folha de S.Paulo broke the news in São Paulo, Brazil on Monday, October 5, 2026.
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