I still drink my 2 cups of pau d'arco tea every day and swear by the stuff.
I agree, pau d' arco (lapacho, taheebo, ipe roxo) is a great herb for many things. It contains 18 antiseptic anthraquinones and napthaquinones as well as 5 anti-inflammatories.
A tip though, combining pau d' arco with chaparral, which is also antitumor, will potentiate the effects of the pau d' arco.