23 g Protein5 g BCAAsDigestion Friendly FormulaProtein You'll Crave Whey + Casein BlendMilk Protein IsolateNaturally and Artificially FlavoredProtein Powder Drink MixGluten FreeLab Tested Third Party Tested For Quality and PurityKnow Your Protein Select Protein™ The Science-Based Protein Do You Just Whey? If you're a regular protein user, there's something you need to know. When it comes to optimally building lean muscle, 100% whey protein is NOT THE KING like you've been led to believe. Nature has it right. When researchers tested a combination of whey protein + casein protein, as found naturally in milk protein, they discovered that the two protein sources work together in a synergistic manner to build lean muscle. Researchers have also found the combination of whey protein with casein protein results in a quick increase in protein synthesis along with a sustained elevation in plasma leucine levels. It is important to consume both whey and casein protein together. That is why we have formulated SELECT PROTEIN with Milk Protein Isolate, the first ingredient of our formula, which is comprised naturally of both casein and whey protein. This combination acts in a way that 100% whey protein cannot.  This is the science SELECT PROTEIN™ is formulated from ... a combination of the highest quality Milk Protein Isolate and Whey Protein Concentrate 80%.