Muscle Milk is abandoning its legacy as a sports-nutrition drink for the elite and repositioning itself as a mainstream protein source. The brand's Pro line, launched this month, reflects what PepsiCo calls the brand's "biggest transformation" in nearly 30 years.
The core change is a reformulation using ultra-filtered milk that boosts protein content while cutting lactose. The new formula delivers 26 and 42 grams of protein depending on the product tier, up slightly from 25 and 40 grams previously. The brand also stripped artificial sweeteners, flavors and colors to simplify the ingredient label.
Marissa Pines, VP/GM of Gatorade Brands at PepsiCo, said the shift addresses a gap between Muscle Milk's past and the protein beverage category today. "For nearly 30 years we've been a leader in the category. But in recent years the category has evolved so much," Pines said. "I don't think that we were moving as fast as the category was."
A two-tier strategy for two audiences
Rather than consolidate around a single protein level, Muscle Milk is offering both the 42-gram and 26-gram options at roughly the same price to serve different consumer needs. The higher-protein version targets experienced consumers, while the lower-protein drink acts as an entry point for those new to protein beverages.
Pines noted that higher protein levels can be intimidating for some consumers. "Some of those higher protein content levels are intimidating … and that's where the lower protein content is so important," she said. The brand now competes not just with bodybuilders but with people seeking satiety, convenience and broader nutrition goals.
Cleaner labels meet taste claims
The brand's R&D brief was explicit: match or beat competitors on taste while simplifying the ingredient deck. Pines said the team was told to "deliver something that tastes better than the competition … and has a shorter, cleaner ingredient line."
The Pro line comes in four flavors: Chocolate, Vanilla Crème, Cookies 'n Crème and Strawberries 'n Crème in 11-ounce cartons and 14-ounce bottles. Packaging now displays protein content front and center and uses visuals to reinforce flavor.
Reaching beyond the gym
Muscle Milk tested its broadened appeal at a "Prodega" pop-up event in New York City last month, partnering with rugby player Ilona Maher. Pines said the event aimed to address what she calls widespread "protein confusion" among consumers who are unsure how much protein they need or why.
The pop-up attendance revealed a much more diverse consumer base than Muscle Milk's traditional male, performance-oriented audience. Pines said the brand now seeks to capture "more women, more people who are consuming Muscle Milk because they need it during their shift at work … or as an on-the-go convenience solution."
Fitting into Gatorade's wellness push
The Pro relaunch sits within a wider health and wellness priority for the entire Gatorade portfolio, where protein is positioned as a core pillar. Pines sees protein shifting from a niche sports ingredient into mainstream dietary staple and said the goal is "to ensure that we have a protein option for whatever you're looking for."