MS Protein BCAA 2:1:1 capsules provide an unrivalled standard of Branch Chain Amino Acids. This BCAA 2:1:1 contain the finest, ultra-pure pharmaceutical grade Leucine, Isoleucine and Valine in a 2:1:1 ratio. The higher percentage of Leucine is added to help activate the body's mTOR pathway, encouraging even greater protein synthesis, and supports 100% natural growth and repair of muscle tissue.