FUEL YOUR ULTIMATE This is NOT your typical energy drink. This is the Ultimate, explosive, super-charged, no-holds-barred, can of domination, engineered for the elite among us who demand nothing but results. Every can of C4® Ultimate Carbonated is loaded with incredible flavors and the perfect amount of carbonation to kick-start your taste buds. ULTIMATE INGREDIENTS FOR ULTIMATE DOMINATION C4® Ultimate Carbonated is packed with a combination of clinically studied ingredients never before seen in a performance energy drink. Born from the legendary explosive energy, pumps, endurance, and focus found in C4® Ultimate, this high-intensity explosive energy formula delivers 300mg Caffeine, CarnoSyn® Beta-Alanine, and AlphaSize A-GPC® engineered to unlock the Ultimate level of performance for the everyday grind.