For years you’ve relied on C4 to help you raise the bar and push limits. C4 50X is the next step for those who want to level up. Its formula features approximately 50% more of the active ingredients per scoop that were key to the power of the original C4 Extreme®. C4 50X also has two new ingredients: TeaCor™ for hard hitting energy; and XCELICOR™ to help the energy last longer.*