Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Pau d'arco (Tabebuia avellanedae or Handroanthus impetiginosus) is a tree native to South America whose inner bark has been used traditionally in herbal medicine. In South American folk practices, pau d'arco tea is consumed for a variety of ailments, including digestive complaints and infections. Its use to support the large intestine (colon) is primarily rooted in its traditional reputation for antimicrobial and anti-inflammatory effects. Historically, it has been employed to address intestinal infections, candidiasis, and as a general "gut cleanser." The active compounds, such as lapachol and beta-lapachone, have shown some antimicrobial activity in laboratory studies, but robust clinical evidence in humans is lacking.

There are very few scientific studies directly examining pau d'arco's effect on large intestine health or specific colon conditions. Most available research is limited to in vitro or animal studies investigating its antimicrobial, antifungal, or anti-inflammatory properties. There is insufficient clinical data to confirm efficacy for bowel health, colon cleansing, or prevention/treatment of colon disorders in humans. Thus, while traditional use supports its application for the large intestine, scientific validation is minimal, and the evidence level is low.

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