Starbucks Sued Over 'Sugar-Free' Protein Drinks Containing Up to 21g of Sugar

Key points

• A federal lawsuit filed by Hagens Berman alleges Starbucks mislabels protein drinks as 'sugar-free' despite containing 13 to 21 grams of sugar per serving.
• Starbucks denies the allegations, stating the sugar comes from protein-boosted milk and that no sugar is added to the beverages.
• The lawsuit seeks damages for consumers and a court order to stop using the 'sugar-free' label on products containing sugar.
• Critics argue the labeling is misleading for health-conscious consumers, particularly those managing diabetes or blood glucose levels.

Background

Starbucks introduced these protein-boosted beverages in September 2025 to compete with rivals like Dutch Bros. The company has faced previous scrutiny over its AI inventory tools and recyclable labeling, but this is the first major legal challenge regarding its nutritional claims. The lawsuit highlights a broader consumer concern about the distinction between 'no added sugar' and 'sugar-free' in food and beverage marketing.

How outlets are covering it

Gizmodo emphasizes the confusion surrounding Starbucks' explanation, noting that the company's spokesperson initially claimed the sugar came from the protein boost but later clarified it was from the milk. Gizmodo criticizes Starbucks for not explicitly stating the distinction between 'added sugar' and 'naturally occurring sugar' in its initial response. NBC News focuses on the legal aspects of the lawsuit, highlighting the specific sugar content (13-21 grams) and the plaintiffs' argument that the labeling is deceptive. Both outlets agree that Starbucks denies the allegations and intends to defend itself vigorously, but Gizmodo places more emphasis on the consumer confusion, while NBC News focuses on the legal implications and the plaintiffs' claims.

Why it matters

This lawsuit highlights the importance of clear and accurate nutritional labeling for consumers, particularly those with health conditions like diabetes. It also raises questions about the distinction between 'no added sugar' and 'sugar-free' in food and beverage marketing, which can have significant health implications for consumers.

What to watch

The lawsuit seeks damages for consumers and a court order to stop using the 'sugar-free' label on products containing sugar. Starbucks has denied the allegations and intends to defend itself vigorously. The outcome of the lawsuit could have implications for how companies label their products and the legal standards for nutritional claims.