Clavo huasca is a large, woody vine that grows up to 80m in length and is indigenous to the Amazon rainforest and other parts of tropical South America. Two species of plants are sold in herbal commerce as "clavo huasca" - the true Tynanthus vine, and another, completely different, Mandevilla genus vine. (We offer the real vine.) Indigenous Traditional Use: The Shipibo-Conibo, Kayapó, and Assurini Indian tribes in the Amazon rainforest regard clavo huasca highly as an impotency remedy ...(more)