Branched chain amino acids drive black is an ultra pure blend that delivers the branched chain amino acids L-leucine, L-isoleucine and L-valine in its research proven and natural ratio of 2:1:1. No fluff or inferior amino acids were added. Nothing was done to upset this superior ratio of ultra pure Branched chain amino acidss. Branched chain amino acidss account for 33 percent of all muscle protein. Unlike normal amino acids, Branched chain amino acidss are directly metabolized within the muscle where they have a special anabolic and anti-catabolic effect on it. Timing, dosage and quality of the Branched chain amino acids formula are crucial to fully benefit as an athlete. Branched chain amino acidss help improve performance and enhance muscle recovery after intense exercise leading to muscle mass and strength gains. Branched chain amino acids drive black is for the serious athlete who does not compromise and is result driven. It's your perfect anabolic formula. When taken before exercise Branched chain amino acids drive black directly supplies your muscles with the performance enhancing effects of ultra pure Branched chain amino acidss in their optimal 2:1:1 ratio.