Fit Be Bright BCAA Powder from lake Side Fit is a blend of 5g of Branched Chain Amino Acids and Glutamine for lean muscle and recovery. Vitamin B6 is added to enhance the absorption of BCAAs. Branch Chain Amino Acids are the most abundant amino acids found in muscle tissue, and are the most readily absorbed group of amino acids. Fit Be Bright BCAA Powder contains the ideal ratio of 2 parts Leucine to 1 part lsoleucine and Valine.