Fast Twitch Nitric Oxide Energy Supplement has less than 1g of Carbs and is sugar-free. It packs 1.7 grams of our Energy Amplifying Matrix that includes Taurine, Glucuronolactone plus 200mg of energy boosting caffeine. This is coupled with 4 grams of the Power Nitric Oxide Matrix that delivers Betaine Anhydrous, Glycocyamine, L-Citrulline and L-Arginine. These two powerful blends Drive Intense Energy, Powerful Muscle Pumps and Workout Power. Taste Satisfaction Guaranteed. Naturally Flavored. Explosive. Building Athletes From the Inside Out. Nitric Oxide Energy Supplement. 200mg Caffeine. <1% Fruit Juice.