Whey, Casein, Milk & Egg Proteins A Blend Of Whey, Micellar Casein, Total Milk & Egg Proteins! Digestive Enzymes! A Great Multi-Purpose Formula For Any Time! Fourstar Protein is a nice blend of 4 great animal proteins, moreover, we added the digestive enzymes Papain and Bromelain! Our quality protein sources include whey protein, total milk protein, the excellent micellar casein and egg protein. These sources have various amino acid profiles so it makes sense to combine them. This formula that can be used any time during the day, including before going to bed. This also means that Fourstar Protein is great for muscle gaining. Its high protein content contributes to the growth and maintenance of muscle mass and also to maintenance of normal bones*. These animal proteins are so-called complete proteins, because they provide the body with all necessary types of amino acids.