Introducing C4 Smart Energy! Break the rules, change the game, and outsmart the competition. Now available via c4energy.com and at your local gnclivewell. #SuperBrainPerformance #EnergyDrink - Powered by 200mg of InnovaTea® Naturally Derived Caffeine (from Tea), 250mg of brain-boosting Cognizin® Citicoline, and the additional support of N-Acetyl L-Tyrosine, C4 Smart Energy delivers energy, focus, and mental performance to help you conquer any task—from work to play, gaming to studying, partying to planning. - Smart Energy is proudly made with natural flavors, no artificial colors or dyes, and contains zero calories, sugar, or carbs.