Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Heather (Calluna vulgaris) has a long history of traditional use in European herbal medicine for supporting urinary tract health, including the treatment of urinary tract infections (UTIs). Historically, its aerial parts and flowers have been used as a diuretic and mild antiseptic, with herbalists recommending heather tea to "flush" the urinary system and alleviate mild symptoms of cystitis or other lower urinary tract discomforts. The traditional rationale stems from its content of arbutin and related phenolic compounds, which are thought to exert mild antimicrobial effects when metabolized in the body, although these amounts are much lower than in more widely used plants like bearberry (Arctostaphylos uva-ursi). However, contemporary scientific evidence directly supporting heather's use for UTIs is very limited. There are few, if any, well-designed clinical trials evaluating its effectiveness or safety for this indication, and most references to its use are found in historical texts or traditional herbal compendia rather than peer-reviewed research. As a result, while there is a basis in traditional practice, the evidence supporting its use for UTIs is weak by modern scientific standards. Individuals considering heather for UTIs should consult with a healthcare professional and rely on standard medical treatments as primary therapy.

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