Metabolic Energy and Adrenal Support NOW ENERGY combines a comprehensive array of nutrients and dietary ingredients to fill up your body with energy. This product has been formulated with ingredients such as B Vitamins, Green Tea, Panax Ginseng, and Rhodiola to support thermogenesis, energy production, and adrenal function. Caffeine is present in this product as a naturally occurring constituent of herbal ingredients such as Guarana, Yerba Mate, and Green Tea. This product has approx. 62 mg of natural caffeine per serving (equivalent to about 1/2 cup of coffee).