Advanced Rapid-Release Nitric Oxide System. Rapid-Release Formula Floods Your System with Nitric Oxide Boosting Arginine. Designed for Powerful Pumps, Skin-Tight Fullness and Extreme Hardness. Get Results After Just One Dose. Initiates Compound Diffusion in Mere Seconds. Rapid-Release Formula Floods Your System with Nitric Oxide Boosting Arginine: What you're holding in your hands is an advanced, rapid-release nitric oxide system. A nitric oxide formula designed to deliver extreme, vascular hyper-expansion and powerful muscle pumps. In fact, when combined with your intense training program, you'll experience overwhelming, muscle-swelling pumps after just your very first dose. Introducing naNO X9 Hardcore Pro Series-a nitric oxide generating powerhouse! Designed for Power Pumps, Skin-Tight Fullness and Extreme Hardness: Nearly half a decade after taking the supplement industry by storm with the global launch of naNO X9, Team MuscleTech researches, who bring you America's No.1 selling sports supplement brand, introduce naNO X9 Hardcore Pro Series. It's engineered to meet the needs of a hard-training athlete, like you, and trigger rapid vasodilation of blood vessels and massive muscle pumps. Plus, it features Rapid-Release Micro-Dispersion Technology so that each dose of this advanced formula initiates compound diffusion (caplet breakdown) in mere seconds. Initiating compound diffusion in mere seconds ultimately leads to complete breakdown of the caplet, ultra-fast. Get Results After Just One Dose: naNO X9 Hardcore Pro Series is designed for overpowering, extreme muscle pumps plus increased muscle hardness and fullness after your very first dose! This could very well be the most intense muscle pump you ever experience . Add naNO X9 Hardcore Pro Series to your hardcore training program, today! 4-Stage Nitric Oxide Hyper-Activation: Here's how naNO X9 Hardcore Pro Series quickly initiates a series of physiological reactions to trigger powerful vasodiation! Stage 1: Rapid Increases in Nitric Oxide (N.O.) Production: The dose of Arginine powering naNO X9 Hardcore Pro Series gets absorbed into the bloodstream, where it enters the endothelial cells and gets converted to nitric oxide synthase. Stage 2: Activation of Key Signaling Enzyme: Newly formed N.O. molecules rapidly diffuse from the endothelium into the smooth muscle cells that make up the blood vessel, where they bid to and activate the enzyme guanylyl cyclase (GC). Stage 3: Vascular Smooth Muscle Relaxation: The enzyme GC converts guanosine triphosphate (GTP) to cyclic guanosine monophosphate (cGMP), which serves as a messenger for many important cellular functions, such as signaling smooth muscle relaxation. Stage 4: Enhanced Vasodilation: As a result, contractile reactions within the smooth muscle cells of the blood vessels are decreased, enhancing vasodilation. naNO X9 Hardcore Pro Series Proprietary Blend: ArgiPro X9: L-arginine, L-arginine alpha-ketoglutarate, L-arginine pyroglutamate, L-arginine HCl. VasoAMP: L-citrulline, L-carnosine (beta-alanine and Histidine dipeptide), Asian ginseng extract (as Panax ginseng)(root), Co-enzyme Q10.