Pau d’ Arco is the common name for the bark derived from several different types of Tabebuia trees, which are large trees featuring colorful trumpet flowers that are indigenous to the Amazon and tropical areas in South and Latin America. The Pau d’ Arco bark has long been used for medicinal purposes by natives of South America, along with the ancient Inca and Aztec civilizations. The herb is retrieved from the inner bark of the tree and can be taken in tincture form, or dried and subsequently steeped in boiling water to create a somewhat bitter tasting tea. It is typically used to treat viral infections, parasites, colds and coughs. It is also effective in treating more serious issues such as gastro-intestinal problems, urinary tract infections and is beneficial to those fighting cancer.