Muscle Milk, the CytoSport protein-beverage brand now distributed through PepsiCo's network, is rolling out a reformulated ready-to-drink shake line made with ultra-filtered milk and delivering 26 to 42 grams of complete protein per serving — all with no artificial sweeteners, flavors, or added colors. The revamped SKUs are available at U.S. retail and direct-to-consumer channels effective May 15.
The reformulation reduces the total ingredient count versus the previous formula while maintaining the protein load that made the brand a fixture in convenience-channel coolers and gym-adjacent foodservice accounts. The 42-gram ceiling places the top-tier SKU among the highest-protein RTD offerings in the mainstream grocery and c-store set, a segment that has seen consistent volume growth as consumers trade meal occasions for high-protein alternatives. No AUV or shipment volume figures were disclosed in conjunction with the launch.
The move comes as the functional-beverage and high-protein RTD segment intensifies around cleaner labels. Competitors including Premier Protein, Fairlife, and OWYN have each leaned into real-dairy or plant-based narratives to capture shoppers scrutinizing ingredient panels — a trend amplified by GLP-1 medication adoption, which has accelerated demand for high-satiety, high-protein formats across both retail and foodservice dayparts. For foodservice operators stocking grab-and-go coolers — from college dining to hospital cafeterias — the reformulation removes a common objection from wellness-oriented procurement standards.
To support the launch, Muscle Milk activated a consumer-facing pop-up it branded the 'Prodega' in Brooklyn, New York, on May 15 and 16, enlisting professional rugby player and Olympic medalist Ilona Maher as a brand ambassador. The experiential format was designed to address what the brand characterizes as widespread consumer confusion around protein sourcing and sufficiency — a positioning that also underpins the national 'Protein for All' campaign rolling out across social and retail channels. A sampling giveaway through the brand's Instagram account (@MuscleMilk) accompanies the retail push.
For channel buyers and foodservice distributors, the cleaner-label credentials are likely the headline. Operators in healthcare, education, and fitness-adjacent venues have increasingly faced pressure to audit RTD protein SKUs for artificial additives, and the reformulated Muscle Milk lineup now checks those compliance boxes while retaining the protein density that justifies its cooler placement. Whether the reformulation translates to measurable velocity gains at the account level will depend heavily on in-store execution and whether PepsiCo's DSD infrastructure prioritizes the new SKUs in high-turn convenience and foodservice outlets.
Written by Michael Politz, Author of Guide to Restaurant Success: The Proven Process for Starting Any Restaurant Business From Scratch to Success (ISBN: 978-1-119-66896-1), Founder of Food & Beverage Magazine, the leading online magazine and resource in the industry. Designer of the Bluetooth logo and recognized in Entrepreneur Magazine's "Top 40 Under 40" for founding American Wholesale Floral, Politz is also the Co-founder of the Proof Awards and the CPG Awards and a partner in numerous consumer brands across the food and beverage sector.
