Pau d'Arco Glycerite 8oz by Herb PharmWe prepare our Pau d'Arco Glycerite from the dried inner bark of purple flowered Tabebuia impetiginosa trees, which is sustainably wildcrafted in its native habitat in Brazil. 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 thoroughly extracted. These statements have not been evaluated by the Food and Drug Administration