Cellucor: Rtd Smart Energy Grapefru, 12 Fo

Naturally sweetened with zero sugars, calories, or carbs, and infused with clinically studied ingredients, C4 Smart Energy provides a revitalizing blend of benefits that include increased mental focus paired with energy from naturally derived caffeine. And with incredible C4 taste, no artificial flavors, colors, dyes, or preservatives, this invigorating formula delivers everything you need to unlock your mental potential with zero compromise.