Build lean muscle mass with the blend in BCAA by Pure Encapsulations. Branched-chain amino acids are vital for lean muscle growth, development and recovery. BCAA by Pure Encapsulations uses the building power of l-leucine, l-isoleucine and l-valine to encourage muscle development and strength gains in the gym. Taken immediately following your workout or exercise, BCAA speeds up your body’s recovery time and repairs torn muscle tissues. It’s hypo-allergenic formula makes it great for people who normally can’t take branched-chain amino acid supplements.