Unlock the Whey Secrets: The Top Protein Powders That Will Transform Your Gains in 2025—Insider Picks from a Certified Coach!
Concentrate
Whey protein concentrate (WPC) is the least processed form of whey, so it contains the highest levels of lactose (milk sugar), fat, carbohydrates, and nutrients. Food manufacturers use WPC (9) to replace fresh dairy and eggs in products like sauces, soups, and baked goods because it adds flavor, color, and texture and extends shelf-life (10). However, it has the lowest protein content out of the three—typically 70 to 80 percent.
Isolate
Whey protein isolate (WPI) is made when whey is filtered and processed. It contains the most protein, 90 percent or more, and less lactose. Because of its higher protein content, sports nutrition companies often prefer WPI for use in supplements, protein bars, and other protein products (11). However, it lacks some of the beneficial nutrients found in the concentrated form (12).
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