Science of BCAA Structured Peptides. BCAA stands for Branch chain of amino acid's, these are made up of L-Leucine, L-isoleucine & L-Valine. This product we feel is the primary supplement for anyone that is in need of something which can offer you the fastest muscle recovery on the market. We thoroughly recommend this product to every Athlete & lifter out there, this is to the point that we recommend at least 1 being taken every day if not then at least during very specific training cycles. The ratio of amino acids in the product is as follows: 625 mg of L-isoleucine, 1175 mg of L-leucine, 600 mg of L-valine. If you think about it that is in the ratio of 1.0 to 1.80 to 1.20. If you are unsure as to the reason why we pointed that out then it is simply because this is the exact ratio which you will find in muscle. At Biotest we aim to make sure that our BCAA's are of the purest form & of the highest quality, this is something we aim to achieve with every single product in our store. Along with our promise of high quality products we also like to make sure that they are all competitively priced as well.