ULTIMATE TRI-STIM EXPERIENCE: Supercharge your energy with the Tri-Stim Experience! C4 Ultimate Energy™ is formulated with 300mg of caffeine, Teacrine®, and Dynamine® for energy that hits like it’s the first time, every time. Made with ZERO sugar or artificial dyes, and available in delicious, bold flavors, C4 Ultimate Energy™ is the triple threat you need to go hard and stay alert without the crash.