Willow Bark 4 oz by Herb PharmWe prepare our Willow Extract from the bark of Salix lucida trees which have been Custom Wildcrafted in their natural wild habitat. To assure optimal extraction of Willow's bioactive compounds, the bark is hand harvested in the early spring, is carefully shade dried and cleaned of excess wood, and is then thoroughly extracted. These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose,