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Muscle Milk, a pioneer in the ready-to-drink protein category with nearly 30 years of nutrition expertise, has announced the complete nationwide reformulation of its core protein shake portfolio. Now crafted using real ultra-filtered milk, the line delivers 26 to 42 grams of complete protein per serving with zero artificial sweeteners, flavours, or added colours.

The move represents a strategic effort by parent company PepsiCo to simplify the category, transitioning the brand from its historical niche athletic positioning to a versatile wellness staple for the everyday active consumer.

Re-engineering a high-volume RTD protein shake to eliminate synthetic additives while maintaining taste and mouthfeel represents a major research and development milestone. Muscle Milk has addressed this by transitioning its dairy base entirely to high-quality ultra-filtered milk.

Key technical attributes of the new formulation include:

• Dual Protein Absorption: Ultra-filtered milk naturally contains both whey protein, which acts quickly to support muscle building, and casein, which digests more slowly to provide sustained amino acid release.

• Portioned Protein Loads: The standard subline delivers 26 grams of complete protein per bottle, while the high-performance Pro subline scales the payload from 33 to 42 grams per serving.

• Clean Ingredient Deck: The products are formulated with no added colours, no artificial sweeteners, and no artificial flavours, meeting the clean-label procurement standards of modern grocery channels.

• Indulgence Profile: The liquid is available in popular flavours, including Chocolate, Vanilla Creme, Cookies and Creme, and Strawberries and Creme.

Inclusive Strength and the Ilona Maher Partnership

To bring the new positioning to life, Muscle Milk has entered a strategic partnership with professional rugby player and Olympic medallist Ilona Maher. Known for championing realistic, real-world strength, Maher represents a move away from traditional, exclusive fitness culture toward a more approachable, lifestyle-aligned message.

Maher emphasised that establishing consistent routines is key to wellness, noting that accessible, great-tasting protein options make it significantly easier for consumers to stick to their daily goals. This collaboration allows Muscle Milk to cultivate deep brand trust among active-wellness demographics who prioritise holistic health and functional recovery.

Experiential Retail Activation and the Prodega Concept

To support the physical rollout and address consumer confusion regarding daily protein requirements, Muscle Milk is debuting an immersive pop-up experience in Brooklyn, New York, called the Prodega.

Inspired by the culturally familiar New York City bodega, the retail-style space is designed to guide visitors through today's crowded nutritional landscape, highlighting the conflicting claims that shoppers face. Guests can then transition into a calm environment to sample the new formulations and engage with educational tools focused on protein clarity.

The activation, scheduled for May 15 and 16, is supplemented by a national digital campaign on Instagram. This multi-channel approach allows the brand to drive immediate trial and digital engagement, while collecting high-resolution feedback from core urban demographics.

The transition of Muscle Milk to an ultra-filtered milk base arrives as the functional beverage sector undergoes rapid premiumisation. With industry data indicating that 73 per cent of Americans recognise the importance of protein beyond the gym, yet nearly two-thirds admit they do not know their ideal daily intake, brands that provide clear, simplified solutions are capturing significant retail velocity.