Smart Energy

Made with 200mg of natural caffeine‡, C4 Smart Energy® Carbonated keeps you energized when you need it most. NATURAL ENERGY Fight back morning grogginess and midday slumps with C4 Smart Energy®. Made with 200mg of natural caffeine‡, C4 Smart Energy® keeps you energized when you need it most. SHARPENS MENTAL FOCUS Get ready to boost your mental game! C4 Smart Energy® is clinically studied to elevate focus, concentration, recall, mental multi-tasking, and gaming performance. BOOST METABOLISM & SUPPORT FAT LOSS Designed to fuel your goals, mentally and physically, C4 Smart Energy® accelerate calorie burning, boost metabolism, and support fat loss.