100% Pure Mixes Instantly Microfiltered High in Branch Chain Amino Acids Natural Unflavored All Natural - No Aspartame, No Sucralose, No Acesulfame-K NOW Whey Protein Isolate is a high quality protein supplement that is both bioavailable and easily digested.  Whey protein contains a high concentration of Branched Chain Amino Acids (BCAA's), which are important for efficient muscle metabolism.*  These qualities make NOW Whey Protein Isolate an ideal supplement for active individuals.   Whey protein is considered to have the highest Biological Value of any protein source - superior in essential amino acid content to beef, milk, casein or soy.   Since 1968, NOW has earned a valued reputation for producing quality products at reasonable prices.  Our Quality Assurance and Quality Control teams of certified nutritionists, chemists and technicians thoroughly evaluate all products, processes, packaging and sources.  Our responsiblity and pledge is to honestly and accurately label quality products that are fresh, potent and effective.   Other delicious flavors available: Vanilla & Chocolate   Voted 2005 Whole Foods Magazine Best Sports Supplement     Read FAQ's   Read more about Sports Nutrition from Your Health Professor   Related Products