Micellar casein, an extremely slow digesting and rich protein source that continues to feed your muscles long after whey proteins have dropped off. In fact, studies with this undenatured form of isolated casein protein (Proc Natl Acad Sci U S A 1997 Dec 23;94(26):14930-5) have demonstrated it to sustain steady amino acid elevations for an incredible 7 hours. It was shown to offer a strong anti-catabolic effect not noticed with fast digesting whey protein, and actually fostered a much more positive overall net protein balance in comparison.
While whey protein may increase protein synthesis to a very high degree, higher than casein, scientists are now recognizing that micellar casein is much more important in preventing muscle breakdown. In fact, additional research is demonstrating that the slow and sustained release of amino acids from micellar casein can cause a “timed release” trickle of amino acids into the bloodstream which can last for as many as 7 full hours after ingestion.
Micellar casein is the natural, undenatured form of casein found in milk. It is separated from milk by means of ultrafiltration, without the use of chemicals, which increases the amount of bioactive milk peptides that support immune function as well as enhance muscle growth. A property of micellar casein is that it may have the ability to form a "gel" in the gut. This provides a steady release of amino acids into the blood stream, which makes it an excellent choice for a long lasting anti-catabolic protein.