C4 Energy's incredible flavor is made with no sugar, zero calories, no artificial flavors, and no compromise on taste. Featuring 200mg of caffeine and you are about to experience energy, hydration, and endurance. Energy with 200mg of caffeine for superhuman performance. Supercharge endurance with the full-body sensory experience Helps maintain cellular hydration within the muscle during periods of intense stress*. Refreshing and mouthwatering flavors and made without artificial colors or dyes.