Scientifically AdvancedCreatine-FreeHyperemia & Testosterone Enhancing PowderEnergy- Focus - Pump - StrengthPre-Workout Increased Performance Dietary Supplement Naturally and Artificially Flavored Now with: Nitrosigine® - Bonded Arginine Silicate 325 mg Caffeine 3x Strength Clinically Tested Boron Insane Pumps Seething Intensity Vasodilation - Testosterone - Reactive Hyperemia (Muscle Pumps) - StrengthFeel Your Power Surging within Minutes from 1 ScoopIncrease Free Testosterone by Up To 29% Nutraceutical Facts: Now with NITROSIGINE® for even greater pumps For nearly a decade, NITRAFLEX® has been the name you trust when it comes to pre-workout formulas. And now, NITRAFLEX® ups the ante by introducing Nitrosigine to the mix, and adding even more pure Citrulline to the formula. This 1-2 punch greatly increases pumps beyond expectations. The volume has been turned up on the energy, focus and flavor as well. Lastly, there's no more artificial dyes in the formulas. All in all, this is the strongest and best-tasting NITRAFLEX® yet Unique Properties of Some of the Key Compounds in NITRAFLEX®: Powered by Nitrosigine®: This new formula boasts Nitrosigine® as its only source of Arginine. Nitrosigine® has been shown to inhibit the enzyme responsible for breaking down Arginine, making it the superior choice of arginine supplementation and a perfect synergistic partner to L-Citrulline. Nitrosigine® has scientifically validated that benefits last up to 6 hours after dosing. In addition to vasodilation (pump) and overall performance-enhancing benefits, Nitrosigine® is clinically shown to increase mental focus, making it a truly well-rounded and multi-faced addition to any effective pre-workout formula.1-Scoop Serving: NITRAFLEX® is so potent, only 1 scoop (1 serving) is necessary. Do not exceed 1 scoop in a single 24-hour period. Do not take NITRAFLEX within 5 hours of bedtime.200 mg of Boron Citrate in Every Dose of NITRAFLEX: This trace mineral has been shown to lower estrogen, while raising free testosterone by 28.3% in as little as 7 days Cognitive Enhancers: NITRAFLEX® contains unique ratios of scientifically validated compounds that help you remain alert, intense and focused while you're flying from set to set with veins fully dilated and muscles pumped to the extreme.