Branched Chain Amino Acids, or BCAAs, are three of the most important essential amino acids – Leucine, Isoleucine, and Valine. They are known for increasing muscle protein synthesis, muscle growth, and decreasing muscle fatigue. 373 Lab BCAAs contains 5 grams of BCAAs per scoop at a 2:1:1 ratio of L-leucine, L-isoleucine, and L-valine, the ideal split for optimal supplementation and to support better muscle recovery and growth.

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