We prepare our Pau d'Arco Glycerite from the dried inner bark of purple-flowered Tabebuia impetiginosa trees which is Custom Wildcrafted by the Guarani Indians in the remote jungle highlands of Paraguay. To assure optimal extraction of Pau d'Arco's bioactive compounds we use only the inner bark which is hand-harvested carefully sun-dried and cleaned of adhering wood and is then shipped directly to our laboratory for thorough extraction.Other products from HerbsPro