Pure Product Complex Protein WPI\WPC \Casein is a protein blend made with whey protein isolate, whey protein concentrate and micellar casein that allows the body to get the nutritional benefits of all of both protein sources in one go. This unflavoured powder is the go-to protein for any nutrition or exercise regimen because it is designed to suit a variety of active lifestyles and diet plans. It does not only include essential amino acids and essential fatty acids but is also an excellent source of fibre, which makes it a nutritious and multi-functional protein supplement.