Derived from the inner barks of tabebuia trees grown in South America, Pau D’Arco has been used extensively by many civilizations to help fight infections, boost energy and generally rejuvenate the body. More recent studies have demonstrated that Pau D’Arco is actually fueled by several active agents, the most powerful being the Naphthoquinones. These potent compounds may be able to assist the body’s immune response to a wide range of undesirable bacteria and fungi.