Dietary Supplement. All natural flavors. Non carbonated. Only 90 calories. Fueled by Quercetin - a powerful all natural antioxidant. No artificial sweeteners, colors or flavors. Contains 3% fruit juice. What's our secret? It all began with health scientists trying to create a product to provide sustained energy for chemotherapy patients. They discovered quercetin (Pronounced kwur-si-tin), a powerful all natural antioxidant and combined it with green tea catechins. Their patented formula was called FRS, and it quickly became the secret weapon for many elite athletes. Lately, FRS has become the choice for people looking to increase their energy and stamina to get through a busy day without crashing. But don't take our word for it - read what real users say, and you'll know all our secrets. Promise not to tell? We trust you! Comparison of Flavonoid Antioxidants per Serving: FRS Healthy Energy 410 mg; blueberries 120 mg; apples 20 mg. Source: Flavonoid content of fruits from USDA Flavonoid database using 1/2 cup serving size and 140 g weight for apples. Flavonoid composition varies among products compared. Contains 48 mg of caffeine (equivalent to approx. 1/2 cup of coffee). Caffeine is used as a metabolic enhancer to help the body absorb other key nutrients in the FRS formula. (These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.)