NOW&ampreg; ENERGY combines a comprehensive array of nutrients and dietary ingredients that endow your body with natural energizers. This formula does not contain ephedra (Ma Huang) or bitter orange - instead, ENERGY has been naturally formulated with ingredients such as B Vitamins, Green Tea, Panax Ginseng, and Rhodiola to naturally 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.