BCAA Post Workout is a blend of 5000mg of branched-chain amino acids and Glutamine for lean muscle and recovery. It contains the ideal ratio of 2 parts Leucine to 1 part Isoleucine and Valine. These amino acids increase protein synthesis and nitrogen retention, both essential to building lean muscle. BCAA's are metabolized directly in the muscle and are considered essential because the body cannot produce them from other compounds. They must be produced from diet or supplementation. Also available in Fruit Punch Flavor!