A thousand years ago, the Incas of Peru found the inner bark of the pink-flowered lapacho tree indispensable for treating fever, sore throat, dysentery, snakebite, bladder and yeast infections, and even cancer. They also used its wood to make bows for hunting.
Although preliminary lab tests show that a chemical in pau d'arco called lapachol can kill some viruses, bacteria, and fungi in test tubes, it isn't known whether it will have the same effects when taken by humans. So even though pau d'arco is sometimes used for conditions ranging from candidiasis (a yeast infection of the vaginal or oral areas), herpes simplex virus, and influenza to parasitic diseases such as schistosomiasis and bacterial infections such as brucellosis, there is no evidence it works. Test tube studies to evaluate whether pau d'arco has any effect on cancer have shown mixed results; and even in studies where pau d'arco does reduce the number of cancer cells, the amounts used would be toxic to humans.
In the 1950s, Brazilian researchers confirmed that this ancient medicine is indeed anti-bacterial. Among more recent investigations:
A study at the University of Rio de Janeiro discovered that pau d'arco helps treat Staphylococcus aureus infections that resist antibiotics. Research at Seoul National University suggests that the herb is active against human intestinal bacteria, which cause food poisoning.
Pau d'arco has effectively treated malaria, yeast infections, tuberculosis, strep, and dysentery. Pau d' arco in small dosages increases immune system activity and in large doses suppresses some immune responses such as inflammation. Its anti-inflammatory work have given pau d'arco promise as a treatment for arthritis, allergies, ulcers, skin problems, and other similar conditions. Add to that list diabetes, flu, lupus, parasites, and skin diseases, and it is easy to see why it was once toted as a 'wonder drug.'
Pau d'arco is sold as tablets, dried bark tea, and tincture (which contains alcohol). The chemicals that give pau d'arco its medicinal effects dissolve poorly in water, so a tea is not recommended.
Most pau d'arco products are not standardized, so it is not possible to determine whether or not they contain an appropriate amount of these active substances. It is important to carefully read the label to make sure that the product actually contains Tabebuia avellanedae as an ingredient.
Pregnant and nursing women should not use pau d'arco until it is sufficiently researched. Pau d'arco has been shown to have blood-thinning actions in some people, and may cause anemia when used long term. Possible side effects from ingesting too much pau d'arco include nausea, vomiting, diarrhea, dizziness, and stomach cramps. Another precaution consumers should heed is assuring that the product they purchase is produced by a reputable manufacturer. Some tested have very few active ingredients. The pau d'arco imported from Argentina is generally considered to be the highest quality bark.
Although preliminary lab tests show that a chemical in pau d'arco called lapachol can kill some viruses, bacteria, and fungi in test tubes, it isn't known whether it will have the same effects when taken by humans. So even though pau d'arco is sometimes used for conditions ranging from candidiasis (a yeast infection of the vaginal or oral areas), herpes simplex virus, and influenza to parasitic diseases such as schistosomiasis and bacterial infections such as brucellosis, there is no evidence it works. Test tube studies to evaluate whether pau d'arco has any effect on cancer have shown mixed results; and even in studies where pau d'arco does reduce the number of cancer cells, the amounts used would be toxic to humans.
In the 1950s, Brazilian researchers confirmed that this ancient medicine is indeed anti-bacterial. Among more recent investigations:
A study at the University of Rio de Janeiro discovered that pau d'arco helps treat Staphylococcus aureus infections that resist antibiotics. Research at Seoul National University suggests that the herb is active against human intestinal bacteria, which cause food poisoning.
Pau d'arco has effectively treated malaria, yeast infections, tuberculosis, strep, and dysentery. Pau d' arco in small dosages increases immune system activity and in large doses suppresses some immune responses such as inflammation. Its anti-inflammatory work have given pau d'arco promise as a treatment for arthritis, allergies, ulcers, skin problems, and other similar conditions. Add to that list diabetes, flu, lupus, parasites, and skin diseases, and it is easy to see why it was once toted as a 'wonder drug.'
Pau d'arco is sold as tablets, dried bark tea, and tincture (which contains alcohol). The chemicals that give pau d'arco its medicinal effects dissolve poorly in water, so a tea is not recommended.
Most pau d'arco products are not standardized, so it is not possible to determine whether or not they contain an appropriate amount of these active substances. It is important to carefully read the label to make sure that the product actually contains Tabebuia avellanedae as an ingredient.
Pregnant and nursing women should not use pau d'arco until it is sufficiently researched. Pau d'arco has been shown to have blood-thinning actions in some people, and may cause anemia when used long term. Possible side effects from ingesting too much pau d'arco include nausea, vomiting, diarrhea, dizziness, and stomach cramps. Another precaution consumers should heed is assuring that the product they purchase is produced by a reputable manufacturer. Some tested have very few active ingredients. The pau d'arco imported from Argentina is generally considered to be the highest quality bark.
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