NOS- Enhancing Fraction Proven to increase Baseline Nitric Oxide as much as 950% Day-Long Perpetual Pump. Provides Instant Recovery. Improves Muscularity. Clinically Proven to Increase Strength. Extended-Release Formula. Adding 'NOS-Enhancing' Peptide Creates Nitric Oxide Overflow! Nitric oxide levels once had a pre-et limit-until NO2 Black, that is! You see, nitric oxide (NO) generators provide your body with arginine-the building block of NO. But it's the NOS enzymes inside your body that convert the Arginine into NO. In fact, NOS is the rate-limiting factor in NO product. Enter NO2 Black! NO2 Black contains ACTINOS the NOS-enhancing peptide fraction that's lab-tested to increase NOS activity and boost nitric oxide levels as much as 950% over baseline Arginine derived nitric oxide (ADNO). NO2 Black represents a quantum leap in nitric oxide science. First, NO2 Black sets the standard by giving you the purest Arginine-AKG(ArginPure) delivered with its clinically tested extended-release delivered technology, pHylex9. Second, the revolutionary 'NOS-Enhancing' peptide fraction up-regulates nitric oxide synthase (NOS) and increases your nitric oxide levels as much as 950% over baseline Arginine derived nitric oxide (ADNO). Third, the NO2 Black formula includes alpha-lipoic acid, designed to boost your insulin sensitivity and nutrient uptake. Simply put, NO2 Black is the most potent nitric oxide generator ever conceived. This Product Contains No Yeast, Wheat, Soy, Sugar Or Other Sweetners, Artificial Flavors, Colors Or Preservatives.