Ditulline Malate helps increase energy levels, while the Arginine Silicate promotes better blood flow and circulation, allowing for better nutrient absorption and oxygen delivery to the muscles. The Norvaline helps support the production of nitric oxide, and the Astragin enhances the absorption and effectiveness of the other ingredients. This stimulant-free pre-workout formula is perfect for those who want to avoid caffeine and other stimulants, but still want to achieve maximum results during their workouts.