ProHD is 100% grass-fed whey isolate. 25 g of protein and 110 calories per serving, with zero fat, no fillers, no blends and no amino spiking. WHAT ISOLATE ACTUALLY MEANS Whey comes in two common forms. Concentrate is the cheaper one: less filtered, carrying more fat, cholesterol and lactose along with the protein. Isolate is filtered further, to a higher protein percentage per gram. That is why a ProHD serving is 25 g of protein for 110 calories with zero fat, and why it sits easier for most people. CROSS-FLOW MICRO-FILTRATION How the whey is filtered decides what survives the process. Cross-flow micro-filtration is a physical filtration method that removes fat, cholesterol and lactose while leaving the protein structure intact, rather than using heat or acid that can denature it. The result absorbs and digests more easily, which is the difference most people actually notice. WHY GRASS-FED Grass-fed dairy comes from cattle raised on pasture rather than grain. It is a sourcing standard rather than a marketing word, and it is a genuine reason this costs more than a commodity whey. If where your protein comes from matters to you, it is stated plainly here rather than hidden behind a blend. NO BLENDS, NO AMINO SPIKING Amino spiking is the practice of adding cheap free-form amino acids so a protein test reads higher than the usable protein actually present. Protein blends serve a similar purpose, letting cheaper sources ride along behind a premium name on the front of the tub. ProHD does neither. The 25 g on the label is complete protein from a single source. HOW TO USE IT Mix one scoop with 8 to 10 oz of cold water or milk. Take it after training, or at any point in the day you need to reach your protein target. It blends into oats, smoothies and yoghurt without changing the texture.