C4 Performance RTD delivers professional-grade energy in a convenient ready-to-drink format. Each 500ml can packs 200mg of caffeine for explosive energy and mental focus, while clinically studied CarnoSyn Beta-Alanine combats muscle fatigue to extend your endurance. BetaPower supports optimal muscle cell hydration for sustained physical performance. NSF Certified for Sport, this formula is trusted by professional and collegiate athletes who demand results. Perfect for pre-workout intensity or mid-session performance boost.