Cat's Claw Extract from the inner bark of Uncaria tomentosa vines which are Custom Wildcrafted by the Asháninka Indians in their native wild habitat in the Amazonian highlands of Peru.To assure optimal extraction of Cat's Claw's bioactive compounds we use only the inner bark which is hand-harvested carefully sun-dried and cleaned of outer bark and is then shipped directly to our laboratory for thorough extraction.Other products from HerbsPro