Pre Workout Nitric Oxide Powder. EXTRA STRENGTH: 6,950mg Power Amino Blend per serving, including 5500mg of L-Arginine and 250mg of L-Citruline. Supports NITRIC OXIDE production, Power, Strength, Muscle Development, Circulation, Sexual Health and Cardiovascular Health. PRE WORKOUT BLEND contains robust Amino Blend of L-Arginine, L-Citruline, L-Isoleucine, L-Leucine, L-Valine, L-Ornithine, L-Proline, Gamma Oryzanol and Transferulic Acid. Supports healthy sexual function in both men and women. Doctor Formulated. Made in the USA in Eniva's nGMP Facility. Vascular Advantage is a specialized formulation of 5500mg of free form L-Arginine plus the addition of a proprietary blend of 9 different amino acids and antioxidants. It supports nitric oxide production, vascular integrity, . High-Potency L-Arginine Blood Vessel Health Formula. Nitric oxide is the key regulatory molecule for circulation and arousal, as well as plays a role in multiple immunologic and physiologic body processes to maintain healthy living and energy. Research indicates L-Arginine and L-Citruline help support the production of nitric oxide. Vascular Advantage contains the following:L-Arginine: Critical precursor amino acid needed for nitric oxide production.L-Citrulline: An amino acid that recycles partially used L-Arginine for continued nitric oxide production.Vitamin C: A vitamin critical for the structural integrity of blood vessels, as well as a potent antioxidant.A4 Proprietary Blend: An adjuvant amino acid and antioxidant combination designed for formula stability and to provide additional pathway benefits of energy and muscle strength. Directions: Adults: 4 Scoops. Daily.Dilute in 12-16 ounces of water. Take on an empty stomach. Do not consume with food. Storage Directions: Avoid freezing and heat.