Evidence supporting the use of: Corktree
For the body system: Bladder

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Synopsis

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

Corktree, often referring to the species Phellodendron amurense (Amur corktree), has a long history of use in traditional Chinese medicine (TCM), particularly for supporting the urinary system, which includes the bladder. In TCM, the bark of the Amur corktree (known as "Huang Bai") is frequently used to "clear heat" and "drain dampness," which are traditional concepts associated with urinary tract discomforts, such as frequent urination, burning sensation, and infections. It is commonly included in herbal formulas for conditions interpreted as "damp-heat" in the lower burner, which encompasses the bladder. There is some preliminary scientific evidence suggesting that extracts of Phellodendron amurense have antimicrobial, anti-inflammatory, and diuretic properties—mechanisms that could theoretically support bladder health and urinary function. However, robust clinical trials in humans are lacking, and most evidence comes from animal studies or in vitro research. Therefore, the primary justification for using corktree bark in support of the bladder is based on traditional use and historical practice rather than high-quality scientific validation. While modern research is slowly exploring its active compounds (such as berberine), more studies are needed to confirm efficacy and safety for bladder-specific conditions.

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