Pure Product Unflavoured Micellar Casein Protein Powder is slowly absorbed (up to 12 hours) and therefore supplies amino acids to the muscles over a long period. It is rich in naturally occurring branched-chain and essential amino acids (BCAAs and EAAs) and can assist in the maintenance and growth of muscle. This is completely undenatured, sourced from NZ grass-fed cows using ultra-filtration. It is naturally rich in Branch Chain Amino Acids (BCAAs) and Essential Amino Acids (EAAs). As a slow-release, anti-catabolic protein powder, ideally consumed as a night protein (before bed), when your body typically goes for hours without food. Take casein protein in between meals to keep you satiated and feeling full.