Core Power packs 42g of protein into a single bottle by using ultra-filtered milk, not by adding protein powders or supplements. The process physically concentrates the protein already present in cow’s milk while stripping out most of the sugar and water. The result is a drink that delivers roughly three times the protein of regular milk in the same serving size.
How Ultra-Filtration Concentrates Protein
Regular milk contains about 8g of protein per cup. To get from 8g to 42g, Core Power’s parent company, Fairlife, pushes milk through a series of semi-permeable membranes. These membranes have pores sized to let smaller molecules like lactose (milk sugar) and water pass through, while holding back larger molecules like protein and calcium. Think of it like a very fine sieve: the protein can’t fit through the holes, so it stays behind and becomes more concentrated with each pass.
This cold filtration happens without heat, which preserves the protein structure and flavor of the milk. By selectively removing water and sugar, the process leaves behind a liquid that is still recognizably milk but dramatically richer in protein. No whey isolate, casein powder, or other protein supplements are added. The ingredient list for Core Power Elite (the 42g line) starts with “lowfat filtered milk,” and the company specifically states it contains no added protein powders.
What Happens to the Lactose
The filtration process removes most of the lactose along with the water. Whatever small amount of lactose remains is then broken down by a lactase enzyme added to the milk, converting it into simpler sugars your body can digest easily. This two-step approach, physical removal followed by enzymatic breakdown, is why Core Power is labeled lactose-free. It also explains the low sugar count: the 42g bottle contains just 9g of total carbohydrates, compared to about 12g of sugar in a single cup of regular milk.
What’s Actually in the Bottle
The chocolate variety of Core Power Elite 42g clocks in at 230 calories with 9g of carbohydrates. For sweetness beyond what the milk itself provides, the formula uses monk fruit juice concentrate and stevia leaf extract, both zero-calorie sweeteners. The remaining ingredients are flavoring and stabilizers: alkalized cocoa, honey, natural flavors, carrageenan (a thickener), and added vitamins A and D.
The protein itself is a natural mix of casein and whey, the two proteins found in all cow’s milk. Casein digests slowly, while whey absorbs quickly, so you get a combination that many people find more satisfying than a pure whey protein shake. This is simply what milk protein looks like when you haven’t separated it into isolated components.
How It Stays Shelf-Stable
You’ll notice Core Power can sit on a store shelf unrefrigerated for months. That’s not because of preservatives. The milk is briefly heated to about 135°C (275°F) for just a few seconds, a method called ultra-high temperature processing. This flash of extreme heat destroys bacteria and spores without significantly changing the nutritional profile or cooking the protein. The milk is then rapidly cooled and filled into pre-sterilized containers in a sealed, contamination-free environment. The combination of sterile milk and sterile packaging is what gives the product a shelf life of up to 12 months without refrigeration.
Why It Tastes Like Milk, Not a Protein Shake
Most protein drinks start with water and add powdered protein back in, which is why they often have a chalky or artificial texture. Core Power takes the opposite approach. It starts with actual milk and removes what it doesn’t want rather than building a drink from scratch. The protein was never dehydrated, powdered, or reconstituted, so the mouthfeel stays closer to what you’d expect from a glass of milk. The trade-off is cost: ultra-filtered milk products are significantly more expensive than mixing whey powder with water, which is why a single bottle typically runs $4 to $5.
The 42g version (branded “Elite”) is designed for post-workout recovery or as a high-protein meal replacement. Core Power also sells a 26g version for people who want less protein per serving. Both use the same filtration technology, just concentrated to different degrees.