MET-Rx BCAA 5000 POWDER 300g - supplies a precise, clinically studied ratio of Leucine, Valine and Isoleucine (45/30/25). This Anti-Catabolic formula works directly within muscle to regulate protein synthesis at the genetic level. BCAA 5000 provides muscle nitrogen support for a variety of metabolic functions. It can also increase nitrogen retention and be used as an energy source to fuel exercise. Enhanced with high-potency Vitamin B-6, which plays an essential role in BCAA metabolism for optimal usage.