Optimum Nutrition, 100% Casein Protein, Vanilla 4.0 lbProduct Description Optimum Nutrition's 100% Casein Protein provides a slow digesting source of protein that supports muscle recovery and growth. This high quality casein protein is perfect for using before bedtime or between meals to help combat muscle breakdown and support muscle health. Each serving delivers 24 grams of protein with a smooth vanilla flavor that mixes easily in water or milk. With its unique composition, it supplies a steady release