LionEdge Nutrition Casein Edge Review: Real Fruit Infused Casein!Casein Edge from LionEdge Nutrition is not your typical casein protein. Casein Edge uses real fruit inclusions (strawberries) to give you a different experience, a "fresh" experience. You also get the addition of Velositol, which ensures that the casein protein digested is used more efficiently. Casein Edge is one of the best casein proteins we've tried at FI.