We prepare our Pau d'Arco Extract from the dried inner bark of purple-flowered Tabebuia impetiginosa trees which is Custom Wildcrafted in the highland jungles of Paraguay.To assure optimal extraction of Pau d'Arco's bioactive compounds we use only the inner bark (without phloem) which is hand-harvested and carefully sun-dried by the indigenous Guarani Indians and is then shipped directly to our laboratory for thorough extraction.Other products from HerbsPro