Cellucor C4 Original Carbonated is the energy drink may become your favourite drink of all time. An amount of 200mg of caffeine to boost your energy, 30mg of Niacin to get the pump you need at the gym. Carnosyn beta-alanine to delay fatigue and improve performance, Citrulline malate to support blood flow, Betapower betaine to hydrate muscles, and finally, n-acetyl-l-tyrosine to support your mental focus and health during stressful activities. C4 Original Carbonated pre-workout energy drink contains 0% sugar, 0% Carbohydrates and 0% calories.