High-dose BCAA (Branched-Chain Amino Acids) supplement from Now Foods. Each dose of four capsules contains 2600mg of BCAA, including 1300mg of L-Leucine, 650mg of L-Isoleucine, and 650mg of L-Valine. These amino acids are essential for the human body and can be supplied daily. Now Foods' BCAA has good bioavailability and is suitable for a vegan diet. In addition, the capsules undergo quality and purity testing in independent laboratories. They do not contain gluten or genetic engineering. BCAAs are important nutrients that are involved in many processes of the human body.