Sustained Protein Release 19 g Protein, Mixes Easily Naturally Ocurring BCAAs No Artificial Sweeteners - No Aspartame - No Sucralose - No Acesulfame-K GMP Quality Assured Micellar Casein is a slowly digested, complete protein, with an excellent amino acid profile that typically has over 4,500 mg of BCAAs (Branched Chain Amino Acids) per 1 scoop serving. Because Micellar Casein thickens in the low pH of the stomach, slowing down its entry into the intestines, its amino acids are released in a sustained manner. Slower digestion ensures continuous availability of amino acids for the body. NOW Micellar Casein mixes easily in your favorite beverage and is an ideal choice for sustained protein support.