THE PROTEIN WORKS BCAA Ultra 5: 1:1 is engineered using the finest Branched Chain Amino Acids on the market today. Whilst most BCAA supplements on the market contain Leucine, Isoleucine and Valine in a 2: 1:1 ratio, the ground-breaking BCAA Ultra 5: 1:1 is formulated with a far higher ratio of Leucine. It is ideal to take post training with a quick absorbing protein, to help induce protein synthesis and promote the repair and regrowth of new muscle tissue. Branched Chain Amino Acids are hugely popular in sports nutrition due to their ability to help promote muscle growth, improve endurance and enhance recovery. Click on the Product to see full information for your absolute peace of mind.