Branched chain amino acids provide safe nutritional support for athletes and individuals seeking optimal lean muscle mass. The three branched chain amino acids, leucine, isoleucine and valine, boost energy while helping to counteract muscle protein breakdown during exercise. BCAA promotes healthy muscle mass by boosting energy metabolism in working muscle and by inhibiting protein breakdown during exercise. Providing: L- Leucine 300mg L- Isoleucine 150mg L- Valine 150mg