The wood and inner bark are a bitter, cooling, pungent herb that lowers fever and reduces inflammation.
The heartwood contains a naphthaquinone called lapachol – this has been shown to have antibiotic and antitumor effects.
Many native S. American peoples have prized pau d’arco as a cure-all, using it to treat a wide range of conditions including wounds, fevers, dysentery, intestinal inflammation and snake bites.
In modern herbalism the bark is used internally in the treatment of inflammatory diseases, chronic degenerative diseases, cancers, tumours, cysts, fungal infections (especially candidiasis), venereal diseases, rheumatic diseases, skin problems (especially eczema, herpes and scabies).
It is also used, in combination with other herbs, to clear toxins, resolve congestion and strengthen the immune system.
He wood is harvested as required and dried for later use.