NutraKey products are Pharmaceuticalgrade ultra-pure for maximum bioavailability. Pure amino acid with no fillers or additives. HPLC verified. Branched-chain amino acid (BCAA) is the namegiven to three of the eight essential amino acids needed to make protein: leucine isoleucine and valine. They are called branched-chain because their structure has a 'branch' off the main trunk of the molecule. The combination of these three essential amino acids makes up approximately one-third of skeletal muscle in the human body. The body cannot produce BCAA's on its own but must obtain through diet or supplementation. In order toget energy the body can actually break down muscle toget these BCAAs. By supplementing BCAAs during and after your workout you can prevent muscle tissue breakdown which occurs as a natural part of metabolism. Almost 1/3 of muscle tissue is composed of BCAA which are needed for musclegrowth the maintenance of muscle tissue and to preserve muscle stores ofglycogen. BCAA's can turn on the main musclegrowth pathway in muscle tissue which can increase protein synthesis and help prevent muscle tissue breakdown after strenuous exercise. Each serving of NutraKey ultra-micronized BCAA provides the three free form branched chain amino acids L-Luecine L-Valine and L-Isoleucine in the proper 2:1:1 ratio and is available in either pure powder or capsules. Benefits of Branch Chain Amino Acids Essential for Protein Synthesis Increase Strength & Endurance Improves Nitrogen Retention Speeds Muscle Recovery &growth Enhanced Energy Levels & performance Reduces Muscle Fatigue Helps Preserve Lean Muscle Muscle tissues are comprised of two proteins actin and myosin. The main components of the two proteins are leucine isoleucine and valine which are called branched chain amino acid (BCAAs) for their molecular structures.