Pre-workout supplement. Nitric oxide activator. 30 (21 g) Servings. Naturally and artificially flavored. 40 Active Ingredients. 2 Types of Arginine. 125mg Caffeine. Vassive-NO - The Ultimate Pre-Workout Performance Tool. The bigger picture of vascularity: The 'pump' that bodybuilders talk about is caused by an increase in muscular blood flow. Vassive-N.O. harnesses the power of the pump by stimulating the production of Nitric Oxide in your body, causing your blood vessels to dilate and your blood flow to rush directly to your muscles. You will be more focused, pumped and have more endurance throughout your workout. That's the Vassive-N.O. after effect. No aspartame. Patented Creatine Formula.