Core Power protein shakes are made entirely from ultra-filtered cow’s milk, meaning the protein inside is milk protein: a combination of casein and whey. There are no added protein powders, plant proteins, or protein blends. The only protein source listed in the ingredients is filtered lowfat Grade A milk.
How Ultra-Filtration Concentrates the Protein
Core Power is made by fairlife, which uses a process called ultra-filtration to separate milk into its individual components. The milk passes through specialized membranes that act like very fine sieves. Large molecules like proteins get retained, while smaller molecules like lactose (milk sugar) and some minerals pass through and are partially removed. The result is milk with significantly more protein and less sugar per serving than regular milk.
This is a physical filtration process, not a chemical one. No protein isolates or concentrates are added back in. The protein you’re drinking is the same casein and whey naturally present in cow’s milk, just in a higher concentration because the water, sugar, and some minerals have been reduced.
Casein and Whey: What You’re Getting
Cow’s milk protein is roughly 80% casein and 20% whey. Since Core Power starts with whole milk and concentrates it, the protein ratio stays close to that natural split. This matters because casein and whey behave differently in your body.
Whey digests quickly, causing a rapid spike in amino acids in your bloodstream. It’s the protein most associated with post-workout recovery. Casein digests much more slowly, forming a gel-like substance in your stomach that releases amino acids over several hours. Getting both in one drink gives you a fast initial supply of amino acids plus a slower, sustained release afterward. This combination is one reason Core Power is marketed as a recovery drink rather than just a protein supplement.
How It Compares Across Versions
Core Power comes in two main protein levels. The standard version contains 26 grams of protein per bottle. The Elite version packs 42 grams of protein into 230 calories with 7 grams of sugar. Both versions use the same ultra-filtered milk as their protein source. The Elite simply concentrates the milk further, giving you more protein per bottle without switching to a different protein type or adding supplemental powders.
For context, a regular 14-ounce glass of milk contains about 12 to 13 grams of protein. The standard Core Power roughly doubles that in a similar serving size, and the Elite version more than triples it.
Lactose-Free but Still Dairy
Core Power is labeled lactose-free, which can cause some confusion about whether it’s truly a dairy product. It is. The ultra-filtration process removes a large portion of the lactose, and then a lactase enzyme is added to break down whatever lactose remains. Lactase splits lactose into two simpler sugars, glucose and galactose, which most people digest without trouble. You can see “lactase enzyme” right in the ingredients list.
This means Core Power is safe for most people with lactose intolerance, but it’s not suitable for anyone with a true milk protein allergy. The casein and whey are fully intact, which is the whole point of the product.
Why It Tastes Different From Protein Powder
If you’ve tried whey protein shakes mixed from powder, Core Power has a noticeably different texture and taste. That’s partly because you’re drinking actual concentrated milk rather than dried and reconstituted protein. The fat content from lowfat milk gives it a smoother mouthfeel, and the natural milk sugars (plus small amounts of monk fruit, stevia, and other sweeteners) create a flavor profile closer to chocolate milk than a typical protein shake.
The shelf-stable versions you find at room temperature in stores have been processed with ultra-high heat and sealed in sterile packaging, which allows them to last for months without refrigeration. This heat treatment can slightly alter the taste compared to the refrigerated versions, but the protein content and type remain the same.
How It Stacks Up Against Other Protein Sources
- Whey protein shakes: Most powder-based shakes use isolated whey, giving you only the fast-digesting fraction. Core Power gives you both whey and casein together.
- Plant-based shakes: Pea, soy, or rice protein blends have different amino acid profiles. Milk protein is a complete protein with all essential amino acids in high concentrations, particularly leucine, which plays a key role in triggering muscle repair.
- Regular milk: Same type of protein, just far less of it per serving. You’d need to drink roughly three glasses of milk to match one bottle of Core Power Elite.
The protein in Core Power isn’t exotic or engineered. It’s the same casein and whey found in every glass of cow’s milk, filtered down to a higher concentration and stripped of most of its lactose.