Pre-Mix Pre-Workout for Wellness, Focus, and Ultimate Convenience! Supports Wellness Levels During Workouts! Introducing C4 Original Carbonated, our newest addition to the C4 family. Canned, carbonated, and charged with the explosive wellness and legendary performance of C4 Original, C4 Original Carbonated is the perfect fuel for your fitness journey.C4 Original Carbonated tastes amazing and contains zero sugar, zero calories, and zero total carbs.