11 Grams BCAA's per serving. Blends six of the highest biological value proteins. 55 Grams Time Released Protein for better assimilation. Instantized protein! Mixes instantly! Virtually clump free! Natural & artificially flavored. Best tasting protein guaranteed! America's No. 1 blended protein. Pro Blend 55: In 1996, HDT began the process of developing the best quality protein powder possible. We looked at all the applicable research on protein digestion, protein absorption, nitrogen retention and the individual amino acid proteins of each of our high quality protein substrates. The most resounding thing we learned was that there is no one best protein. Each protein has a limiting factor, whether it be in its rate of digestion, absorption or in an individual amino acid score. With this in mind we used a blend of 4 different types of whey protein (Micro Ultra Filtered Whey Protein Concentrate, Micro Ultra Filtered Whey Protein Isolate, Ion Exchanged Whey Protein Isolate, and Hydrolyzed Whey Protein Isolate), Egg Albumen and Calcium Caseinate. Not bad for 1996 - Now it is the 21st century and we have made a few alterations in our formula. Technology has enabled us to replace the Calcium Caseinate with the more readily digested Micellar Casein. We also fortified Pro Blend 55 with extra Glutamine and BCAA's to aid the body's ability to recover. This formula guarantees that your muscles will have the amino acids available when they need them whether it is 10-30 minutes after you get done training (Hydrolyzed Whey Protein Isolate), 30-50 minutes (Micro Ultra Filtered Whey Protein Isolate and Ion Exchanged Whey Protein Isolate), 50-80 minutes (Micro Ultra Filtered Whey Protein Concentrate), 80-110 minutes (Egg Albumen) or 110-240 minutes (Micellar Casein). As you can see Pro Blend 55 not only gives you a quick rise in amino acid blood values from Hydrolyzed Whey Protein Isolate, but also keeps them elevated for hours with Micellar Casein, thus making it the protein of choice for those looking to either gain muscle or maintain while dieting! Fortified with L-Glutamine. Aspartame free! Lactose free! High protein. Low carbohydrate.