The Best Whey Protein Powders of 2025, According to a Certified Sports Nutrition Coach
The Best Whey Protein Powders of 2025, According to a Certified Sports Nutrition Coach Whey protein powder is a popular supplement because it’s a simple and effective way to increase daily protein intake. Whey is a complete protein that contains all nine essential amino acids our bodies need to build muscle. Whey protein also supplies the body with branched-chain amino acids (BCAAs), like leucine, which help promote muscle growth (1). We consulted Pete Nastasi, a certified nutrition coach (C.N.C.), to help us find the best whey protein powders on the market. Here, we break down the different types of whey protein powders available (concentrate, isolate, and hydrolysate), which types will work best for you, and what nutrition information to look for. Plus, we’ve tested over 50 protein powders to help us create the list of our top picks. Medical disclaimer: This article is intended for educational and informational purposes only. It is not intended as a substitute for medical advice. For health advice, contact a licensed healthcare provider. How We Chose the Best Whey Protein Powders We chose products for our list of the best whey protein powders based on a number of factors reflected in our whey protein powder scoring methodology. These include: Protein source: Whey protein is available as a concentrate, isolate, hydrolysate, or blend. We rank whey isolates and hydrolysates higher than concentrates because they are easier to digest and filtered to remove carbs and fat. Macronutrient calories per serving: We prioritize whey protein powders with the most calories from protein—as opposed to fat or carbs. Total protein per serving: While everyone has varying protein needs, 25–30 grams of protein is generally recommended with each snack or meal. This amount is also the best value per serving of protein powder. Price per gram of protein: While price isn’t always indicative of quality or value, we do reward whey protein powders that are more affordable, though we give this category less weight than the others. Sweeteners: We consider research about common sweeteners when assessing which whey protein powder formulas provide the least health risks to users. Bonus credits: Whey protein powders can earn small bumps in their overall score by having third-party testing credentials, no proprietary blends, an organic certification, sustainable packaging, and the addition of digestive enzymes. We also receive input from our panel of expert contributors, which includes registered dietitians and highly credentialed experts in sports nutrition and exercise science. Our Picks for the Best Whey Protein Powder of 2025: Best Overall Whey Protein Powder: Transparent Labs 100% Grass-Fed Whey Protein Isolate Best Chocolate Whey Protein: Sports Research Whey Protein Best Grass-Fed Whey Protein: Nutricost Grass-Fed Whey Protein Concentrate Best Vanilla Whey Protein: Legion Whey+ Best-Tasting Whey Protein: Gainful Protein Powder Best Overall Whey Protein Powder: Transparent Labs 100% Grass-Fed Whey Protein Isolate Transparent Labs Grass-Fed Whey Protein Isolate 4.9 Price per serving: $2.00 per serving Protein per serving: 28 grams Protein type: Whey protein isolate Number of servings: 30 Calories per serving: 120 to 150 Flavors: Chocolate Peanut Butter, Cinnamon French Toast, French Vanilla, Milk Chocolate, Mocha, Oatmeal Chocolate Chip Cookie, Strawberry, Unflavored, Vanilla Peanut Butter Third-party tested: Yes, by independent labs Check Price Pros High protein per serving Reasonable price per serving No artificial ingredients Cons Requires an electric blender for the best texture Facility also processes nuts, so the protein may not be nut-free No sugar, all protein—that’s what Transparent Labs set out to accomplish with its grass-fed whey protein isolate. This whey protein undergoes filtration (2), taking out the excess sugar, fat, carbs, and lactose so you’re giving your body the pure protein it needs to rebuild. Whey isolate has the highest protein concentration of the different types of protein powders, and this protein is a good option if you’re trying to reduce your carb and fat intake. Transparent Labs’ Whey Protein Isolate packs 28 grams of protein into each serving—one of the highest on our list. We also like the flavor variety, including unique flavors like Cinnamon French Toast. Bonus: This protein isn’t too sweet, so you can mix it with fruit juice or add it to a fruit smoothie without feeling like you’re drinking a shake made with Fun Dip. Best Chocolate Whey Protein: Sports Research Whey Protein Sports Research Whey Protein 4.7 Price per serving: $1.36 per serving (25 servings); $1.06/serving (60 servings) Protein per serving: 25 grams Nutrition facts: 140 calories, 25 grams of protein, 2 grams of carbs, 3.5 grams of fat Protein source: Whey protein isolate Sweeteners: Stevia, sucralose Flavors: Dutch Chocolate, Creamy Vanilla Subscription: Monthly, subscribe and save 10 percent Check Price Pros Reviewers love the taste, especially of the Chocolate flavor Mixes easily with no clumping Informed Sport Certified Cons Flavor may be too sweet for some Sports Research Whey Protein is formulated with 6.9 grams of BCAAs, including 1,000 milligrams of L-leucine. Studies show leucine may help reduce delayed onset muscle soreness (DOMS). Depending on flavor, this Informed Sport Certified protein powder is sweetened with stevia or sucralose, so those sensitive to these ingredients may need to steer clear. Rachel Pasche says she has a protein shake for dessert some nights using the Dutch Chocolate flavor. “It might be too sweet for some people, but I honestly love the taste so much,” she says. “It’s my favorite flavor of protein powder I’ve ever tried.” She says the powder mixes well with water alone, with both a handheld mixer and in a shaker cup, noting there is some foam at the top that doesn’t last long and no clumping. Additionally, Pasche says she sometimes feels bloated after whey protein shakes, but after six months of using Sports Research Whey, she has not experienced any bloat. Best Grass-Fed Whey Protein: Nutricost Grass-Fed Whey Protein Concentrate Nutricost Grass-Fed Whey Protein Concentrate 4.2 Price per serving: $1.74 per serving (2-pound container) Protein per serving: 25 grams Nutrition facts: 140 calories, 25 grams of protein, 2 grams of carbs, 1 gram of fat Protein source: Grass-fed whey protein concentrate Sweeteners: Stevia Flavors: Chocolate, Vanilla, Chocolate Peanut Butter, Unflavored Subscription: Monthly, subscribe and save 10 percent Check Price Pros Mixes well in milk Comes in both a two-pound and five-pound tub Cons
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