Cellucor C4 Original contains 1.6g CarnoSyn Beta- Alanine, 1g Creatine Nitrate (NO3-T), 150mg Caffeine and 1g Arginine Alpha ketoglutarate. CarnoSyn beta-alanine increases muscle carnosine in the body. Elevated levels of muscle carnosine can extend endurance, speed recovery, build muscle strength, sharpen mental focus and enhance peak performance. Nitric oxide causes vasodilation which allows increased blood flow, decreased blood pressure, and better nutrient and oxygen delivery to your muscles during training. The nitrate molecule in Creatine Nitrate, when ingested from food or supplements is converted to nitric oxide which promotes greater performance. Caffeine promotes an increase in nitric oxide. Thus C4 becomes the pre-workout formula for advanced energy, endurance, focus and pumps that gives you an explosive energy, heightened focus and an overwhelming urge to tackle any challenge.