Bio synergy bcaa powder out is an advanced high performance delicious blend of amino acids containing 5g of the branched chain amino acids l leucine l isoleucine and l valine and beta alanine taurine caffeine and vitamin b6 making it one of the most advanced strength endurance and energy supplements on the market branched chain amino acids bcaas contain a 211 ratio of leucine isoleucine and valine these amino acids are considered to be essential amino acids as they cannot be synt