Optimum Nutrition 100% Whey Gold Standard is made ideally for post-workout to support muscle building and maintaining. It is formulated by filtering excess carbohydrates, fats, and lactose using advanced technology so you receive high-quality protein in every dose. It supplements 24 grams of protein and 5.5 grams of naturally occurring BCAAs per serving to help you recover from endurance and give muscle growth. It comes in an exciting Double Rich Chocolate flavor that tastes better and supports muscle growth simultaneously.