You've asked about the Optimum Nutrition (ON) Gold Standard 100% Whey Protein Powder, 907G (or 2 lbs), which is one of the most popular and best-selling protein powders globally.1Unlike the "Serious Mass" weight gainer you mentioned previously, this product is a pure protein supplement focused on muscle building and recovery with minimal fat and carbohydrates.2Here is a breakdown of its key features and benefits:? Gold Standard 100% Whey: Key FeaturesComponentAmount Per Serving (Approx. 30g scoop)Key FunctionProtein Content24 GramsSupports muscle growth, repair, and maintenance post-workout.Protein SourceWhey Protein Blend: Primarily Whey Protein Isolate (WPI), followed by Whey Protein Concentrate (WPC) and Hydrolyzed Whey Peptides.WPI is the purest form of whey, ensuring rapid absorption and high protein percentage.BCAAs (Naturally Occurring)5.5 GramsBranched-Chain Amino Acids (Leucine, Isoleucine, Valine) help reduce muscle breakdown and speed up recovery.Calories & Macros$\le$ 120 CaloriesLow in calories, fat (typically $\le$ 1.5g), sugar (typically $\le$ 2g), and carbs (typically $\le$ 3g), making it ideal for lean muscle building and low-carb diets.