Optimum Nutrition (ON) Gold Standard 100% Whey Protein Powder- 4 kg 131 servings (Double Rich Chocolate) for Muscle Support & Recovery Vegetarian - Primary Source Whey IsolateOptimum Nutrition's Gold Standard Whey uses pure Whey Protein Isolates as the primary ingredient. Combined with ultra-filtered whey protein concentrate each serving provides 24 grams of all-whey protein and 5.5 grams of naturally occurring Branched Chain Amino Acids (BCAAs) which are prized by athletes for their muscle building qualities. With 10 tempting flavors to choose from ON Gold Standard Whey gives you plenty of ways to keep workout recovery interesting. To instantly check the authenticity of your ON product SMS ON 6 digit unique code on the pack at 57575 or visit our website A to instantly test the authenticity of the product.OPTIMUM NUTRITION (ON) Serious Mass High Protein High Calorie Weight Gainer Powder - Pack of 3 kg (Chocolate) with Vitamins and Minerals VegetarianSERIOUS MASS is the ultimate weight gain and muscle building formula. With +1200 calories per 2-scoop serving and 50 grams of protein to support muscle recovery this powder makes the ideal post-workout and between meals shake for sizing up your goals. SERIOUS MASS provides you with the tools you need to support your weight gain goals.