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We've been pioneering, building, and perfecting pre-workouts longer than most brands have been in sports nutrition. We're obsessed with research, improvement, and results. We're innovators and leaders, and we're not new to our work. We have a legacy of building the best, most effective pre-workouts available. c4 extreme energy was created for those who are looking for the next-level of explosive pre-workout energy! In addition to increasing the C4 energy blend with 300mg of caffeine per serving, every scoop of C4 Extreme Energy also incorporates 3.2g of Carnosine beta Alanine to support muscular endurance, TeaCrine to prolong tolerance buildup, Rauwolfia, and toothed clubmoss. c4 extreme energy isn't for the casual gym goer; it's for Those of you who want to explode through their PRs over and over and over again. We know that for some, just a little bit of energy isn't enough. C4 Extreme Energy is here to help you get up and go, rising to any challenge.