Nitro Cell Volumizer – Whey protein concentrate, whey protein isolate, and micellar casein form the backbone of this blend. Whey concentrate contains a full amino acid profile and is up to 80 percent pure protein. Whey isolate is absorbed very quickly and is up to 98 percent pure protein. Micellar casein is a slow-release protein that forms a mass in the stomach, digesting throughout the day and providing constant protein release. Creatine delivers extra energy during workouts, increased ability to recovery, and quicker lean muscle growth.