Pau D'Arco is used for Candida yeast infections, infectious diarrhoea, bladder infections, parasitic infections, cancer, diabetes, ulcers, gastritis, liver ailments, asthma, bronchitis, cystitis, prostatitis, ringworm, rheumatism, hernias, gonorrhea, syphilis, chlorosis, boils, wounds, as a "tonic and blood builder," and for viral respiratory infections including the common cold and flu.
Pau D'Arco contains an antibacterial agent which helps clean the blood. It helps to enhance liver function and lessen the effects of allergies, cardiovascular problems.The key ingredient is lapachol, which has been found to be useful as an immune booster while fighting cancer, bronchitis and chronic fatigue syndrome. The bark has been useful in yeast infections, for smoker's cough, warts and acne.