Natural energy. Boosts metabolism & supports fat loss (In combination with a calorie reduced diet designed for weight loss and an active lifestyle, C-4 Smart Energy supports fats loss by increasing caloric expenditure). Sharpens mental focus. Natural energy. Caffeine derived from green coffee beans. Boosts metabolism & supports fat loss. Accelerates calorie burning. Sharpens mental focus. Clinically studied to elevate alertness. Promotes well-being, Designed to help you feel your best. Zero artificial colors.