1 oz Pau d"Arco/Tabebuia impetiginosa Extract 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-harvestedand carefully sun-dried by the indigenous Guarani Indians and is then shipped directly to our laboratory for thorough extraction.Our Pau d"Arco is never fumigated or irradiated.Dry herb / menstruum ratio: 1 : 4