ZipVit ZV L-Arginine is a high strength formulation of natural amino acids. In recent studies by researchers at the University of Exeter it was discovered that supplementing with L-Arginine improved levels of Nitric Oxide in endurance athletes which increased stamina levels. Ideal for riders looking for the edge in their next ride. Key Features: 90 tablets. Ingredients: Dicalcium Phosphate, L Arginine Hydrochloride, Microcrystalline Cellulose, Stearic Acid, Silicon Dioxide Nutritional Value: Each tablet will provide 500mg of L-Arginine HCI.