SPEED STACK PUMPED N.O. Energized Pump-Activating Supplement. Zero Sugar. Natural and Artificial Flavors. ENERGY, Pre-Workout and Thermogenesis. SPEED STACK PUMPED N.O. WHAT YOU NEED: Powerful Pumps. Heightened Alertness. Nitric oxide Boost. Minimal carbs and calories. *WHAT IT'S GOT: 3000 mg of Arginine From L-Arginine and A-AKG. 300 mg of Caffeine. 1 gm of Taurine. 5 gm of Glycerol. *per Full Bottle (2 servings). TOTAL CAFFEINE FROM ALL SOURCES IS 150 MG PER SERVING. (These Statements have not been evaluated by the food and drug administration. This product is not intended to diagnose, treat, cure, or prevent any disease).