C4Energy Cellucor C4 Carbonated Energy Drink Highlights: For athletes of all types, from the gym to the court, on the field and in the ring, C4 Performance Energy® fuels sport + fitness performance. When every second matters, there’s no room for compromise. That’s why C4 Performance Energy® powers explosive energy and endurance with 200mg of caffeine and CarnoSyn® Beta Alanine. Made with clinically studied ingredients, ZERO grams of sugar or artificial colors, and carrying the NSF Certified for Sport® label, C4 Performance Energy® is the athlete’s choice for elevating performance. ENERGY THAT HITS™ Unlock your best performance, power, and speed with C4 Performance Energy®.