Well-known brands like Optimum Nutrition, Dymatize Nutrition, and International Protein have made their mark, particularly with products such as whey protein and creatine.

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Shopping The Best Protein Powder for Building Muscle in 2025 With so many options on the market, finding the best protein powder for your specific needs can be a big lift.

We reviewed different blends and spoke with dietitians to find an assortment of the best protein powders for various diets and goals.

Mass gainer protein powders, also called weight gain protein powders, are specifically formulated for athletes and weightlifters looking to pack on pounds, particularly lean muscle mass.

If you're a protein powder junkie, it might be time to reassess your relationship with protein supplements and whey protein powders. Here's why.

Our dietitians and testers rounded up the 12 best protein powders. See the products that made our list and get tips on how to use protein powder.