NOW AVAILABLE! Our newest C4 Smart Energy flavor, Black Cherry, is now available for purchase on C4Energy.com! 🍒 It’s a refreshingly bold, crisp and tart flavor that’s got a sweetness with an edge -- minus the sugar. All this deliciousness PLUS clinically-studied ingredients to enhance your focus and mental alertness. Stock up while supplies last and take 25% off for Black Friday! - #C4Energy #EnergyDrink #SugarFree #Focus #Caffeine #Hydrate #Fitness #ingredients #preworkout #energy #bevdev #flavor #blackfriday