This Ultimate Nitric Oxide Supplement Arginine Supplement Blend is composed of 5-in-1 Amino Acid Pre-Workout Formula Niacin Arginine-Citrulline-Citrulline-Malic Acid-Alanine to provide the best for men Excellent results for pump, feel, growth and endurance. With our best-selling supplement, you can promote the benefits of an active male lifestyle through stamina and strength. High Dose combines important nitric oxide precursors, L-arginine (AAKG and HCl) and L-citrulline malate, to produce high-dose nitric oxide in a convenient capsule form - eliminating the need for tedious shaking to mix, Without sacrificing the dose pumping required for optimal results. Perfect workout supplement for men as nitric oxide aids circulation. With optimal supplementation for men, your pre-workout prep can provide a powerful "pump." Helps you achieve the look of bulky muscles.