Optimum Nutrition Gold Standard 100% Whey Protein
HIGHER PROTIEN PERCENTAGE. ON’s 100% Whey Protein has always been a leader in this respect. With 23 grams of protein in just a one ounce serving, it’s nearly 81% protein by weight! Every serving supplies even MORE low, moderate, and high molecular weight, biologically active WHEY PROTEIN MICROFRACTIONS including Alpha-lactalbumin, Glycomacropeptides, Beta-lactoglobulin, Immunoglobulin G (IgG), Lactoferrin, lactoperoxidase, and various growth factors.