INSTANTIZED BCAA POWDER consists of L-leucine: L-isoleucine : L-valine = 2:1:1 It's for muscle building in sport concept. Is a mixture of THREE branched-chain amino acids formulated into 2:1:1 ratio of L-leucine: L-isoleucine: L-valine through a patented microencapsulation process, with sunflower lecithin.