AW Nutrition’s Iso Pro Vanilla Cake Milkshake is made from 100% Whey Protein Isolate. With 1 gram of carbohydrates and 0.5 grams of fat and 26 grams of protein, Iso Pro is a highly nutritional and great tasting source to increase your daily intake of protein. Increased protein intake can help you gain lean muscle mass, boost metabolic rate, and because WPI is absorbed immediately, flooding your muscles with key amino acids is perfect for post-workout recovery.