Pau D’arco
© Steven FosterHow It Works
Lapachol and beta-lapachone (known collectively as naphthaquinones) are two primary active compounds in pau d’arco. According to laboratory tests, both have anti-fungal properties as potent as ketoconazole, a common antifungal drug.2 However, amounts of these constituents needed to exert an antifungal effect may be toxic to humans. Although these compounds also have anticancer properties according to test tube studies, the effective amount for this effect may also be toxic.3, 4 Therefore, pau d’arco cannot currently be recommended as a treatment for cancer.
How to Use It
A traditional recommendation is 2–3 teaspoons (10–15 grams) of the inner bark simmered in a pint (500 ml) of water for fifteen minutes three times per day.5 However, the naphthaquinones believed to give pau d’arco its major effects are very poorly extracted in water, so teas are not usually recommended in modern herbal medicine.6 Capsules or tablets providing 500–600 mg of powdered bark can be taken three times per day. A tincture, 1/8–1/4 teaspoon (0.5–1 ml) three times per day, can also be used.
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The information presented by TraceGains is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. Self-treatment is not recommended for life-threatening conditions that require medical treatment under a doctor's care. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires December 2025.