BCAA, Glutamine & Vit D is NXT Nutrition's state of the art amino acid formula. When taken throughout the day, this unique formula will accelerate results by combining, BCAAs to prevent muscle breakdown and rebuild muscle tissues. Glutamine to boost growth hormone levels, recovery, fat loss, repair the digestive system and boost the immune system. Vitamin D3 to improve protein synthesis, muscle strength, muscle size, endurance, and immunity. If you want to maximize performance and results then NXT Nutrition BCAA, Glutamine and Vit D should be an essential part of your supplement intake.