MTN OPS Yeti Monster Pre-Workout Supplement -One of the major secrets to the success of Yeti" is its ability to create Nitric Oxide in the body for over 20 hours. Nitric Oxide helps in dilating the blood vessels and arteries, allowing more blood flow throughout your body and muscles.With Yeti MTN OPS add 1,000 mg per serving of L-Citrulline which acts as a catalyst and prolongs the production of Nitric Oxide. This prolonged production is what aids increased strength, power, and endurance during exercise at home, at the gym, or in the outdoors. Nitric Oxide BoosterIncrease Strength, Power, and EnduranceNo Crash1,000 mg per Serving of L-Citrulline Made In USA20 Plus Hour ReleaseGluten Free