Muscle Milk, the original ready-to-drink protein shake brand with nearly 30 years of nutrition expertise, today announced the complete reformulation of its protein shake lineup — now made with ultra-filtered milk, delivering 26-42g of complete protein per serving with no artificial sweeteners, flavors or added colors. The reformulation launches alongside a partnership with rugby medalist Ilona Maher and a nationwide protein for all campaign designed to bring protein clarity to everyday consumers.
Together with Maher, Muscle Milk is introducing an immersive NYC-based experience and a national protein social media giveaway designed to cut through the protein noise and deliver what matters most: protein that helps support healthy muscles with a great taste.
A new standard in protein
Americans are thinking about protein more than ever, but many feel overwhelmed by conflicting information and complicated ingredient lists. While 73% recognize its importance beyond the gym, nearly two-thirds admit they don’t know how much they should be consuming each day1. Muscle Milk’s reformulation meets the moment with convenient shakes made with complete protein from ultra-filtered milk with no artificial sweeteners, artificial flavors, or added colors.
Real ultra-filtered milk is a complete protein, containing whey protein, a fast-acting muscle building protein, as well as casein, a protein that is more slowly digested to support on-going muscle support. Each shake delivers the protein consumers expect from Muscle Milk, with 26 grams in the standard subline and 33-42 grams in the Pro subline. The result is a smooth, great-tasting shake that helps support healthy muscles. Muscle Milk is now the only national ready-to-drink protein shake made with high quality protein made from real ultra-filtered milk and no added colors, no artificial sweeteners, and no artificial flavors. It is available in indulgent flavors, including Chocolate, Vanilla Crème, Cookies ’n Crème and Strawberries ’n Crème.
“Protein has never been more popular, but it’s also never been more confusing,” said Marissa Pines, VP/GM, Gatorade Brands at PepsiCo. “We saw an opportunity to simplify the experience for consumers. With our new formula, we’re delivering high-quality protein from real ultra-filtered milk, with no artificial sweeteners, flavors or added colors and the great taste people expect from Muscle Milk. This is the formula Muscle Milk has always been building toward; great tasting with fewer ingredients and built for how people actually use protein today.”
Strength redefined with Ilona Maher
As Muscle Milk redefines what protein is for, professional rugby player and medalist Ilona Maher brings that mission to life; championing inclusive, real-world strength that reaches well beyond traditional fitness culture.
“Strength looks different for everyone, and for me it’s about showing up, building routines and staying consistent,” said Maher. “I love that Muscle Milk is making protein feel simple and more accessible, because when something tastes great and fits easily into your day, it’s a lot easier to stick with.”
Protein clarity, built for everyone
To show how Muscle Milk is bringing clarity to the protein space, Muscle Milk is opening the “Prodega,” a free, immersive experience in Brooklyn, NY inspired by the culturally familiar bodega. The retail-inspired space guides visitors through today’s crowded protein landscape, reflecting the confusion consumers face when navigating the overwhelming array of claims across the category. Guests then step into a serene environment to sample the newly reformulated Muscle Milk shakes and engage with interactive elements designed to cut through the confusion — delivering the same clarity the new formula brings to the shelf.
The “Prodega” will be open to the public on May 15 from 3-5 p.m. ET and May 16 from 10 a.m.- 6 p.m. ET at 106 N. 6th St., Brooklyn, New York. The experience is free to attend.
Those who cannot attend the “Prodega” experience in NYC are invited to visit @MuscleMilk on Instagram starting May 15, 2026 for an opportunity to get a free bottle of the new Muscle Milk shakes, while supplies last.*
Protein built for all
As a pioneer of the protein shake category, Muscle Milk has supported strength for nearly 30 years – from competitive athletes to everyday people balancing work, family, and fitness. The “Protein for All” campaign and reformulated lineup mark the brand’s next chapter – a Muscle Milk built for how protein is consumed today, not just how it was marketed 30 years ago. New packaging features gradient tones and a stronger emphasis on protein content and flavor, reflecting both the reformulation and the brand’s expanded audience.
The reformulated Muscle Milk protein shakes are available at retailers nationwide, including grocery, mass and convenience stores, as well as online. The lineup includes 11-ounce cartons and 14-ounce bottles, with multipack options also available. Learn more at MuscleMilk.com
