Herb Pharm, Prickly Ash, 1 ozProduct Description Prickly ash extract is from the bark of zanthoxylum clava herculis trees which are custom wildcrafted in their natural wild habitat. To assure optimal extraction of prickly ashs bioactive compounds, the bark is hand harvested only in the autumn, is shade dried, and is then thoroughly extracted. Product Benefits Herbal Supplement. Optimal Well Being. Ingredients Untitled 3 Ingredients: Certified organic cane alcohol, distilled water