My pro jym protein powder is made from the highest-quality sources of protein. That's why i list the precise amount of each type of protein that is in every scoop of pro jym. Research confirms that the best gains in lean muscle mass are achieved with a protein blend that includes a fast-digesting protein (whey protein), a moderate-digesting protein (egg protein) and a slow-digesting protein (casein protein). These are the three protein sources that make up my pro jym protein blend. I optimized the amount of each one to maximize my own results as well as yours. - jim stopanni, phd/ owner - jym supplement science muscle growth, strength, energy and recovery whey protein isolate: 7. 5g per serving micellar casein: 7g p erserving milk protein isolate: 7g per servng egg albumin: 2. 5g per serving tahitian vanilla bean flavored. Jym pro protein - tahitian vanilla bean (22 servings)