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. 64 mg of natural caffeine per serving (equivalent to about 1/2 cup of coffee). Natural color variation may occur in this product.