The “Fizzy Protein” Craze: Costco’s Clear Protein Is Selling Out Nationwide

Protein drinks just got a major upgrade, and it’s coming in a 12-oz aluminum can. Genius Gourmet’s Sparkling Clear Protein has officially hit Costco shelves, and it’s already sparking a “cult favorite” status usually reserved for limited-edition sneakers or viral skincare.

By ditching the traditional thick, milky texture for a crisp, soda-like finish, Genius Gourmet is proving that hitting your macros doesn’t have to feel like a chore.

The “Blue Raspberry Lemonade” flavor has become the breakout star of the lineup. Fans on social media describe the taste as a cross between a zero-sugar energy drink and a melted blue popsicle—worlds away from the chalky, “pancake batter” consistency of traditional shakes. Because it uses ultra-filtered whey protein isolate, the liquid remains completely translucent and thin, allowing the carbonation to shine. It has become a go-to for those who struggle with “protein fatigue” or need a refreshing post-workout option that doesn’t sit heavy in the stomach.

Currently, the drink is a Costco exclusive, sold in 15-count cases for roughly $28.99 to $29.99. However, finding a case has become a sport of its own. Reports of stores selling out within hours of restocking have led to the product appearing on resale sites like eBay and Amazon for nearly double the price.

While some reviewers note a slight “protein aftertaste,” the general consensus is that the innovation is a “game-changer” for functional hydration.