Evidence supporting the use of: Rubus (unspecified)
For the body system: Bladder

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Synopsis

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

Rubus is a genus that includes various bramble species, such as raspberries and blackberries. Traditionally, different parts of Rubus plants—especially the leaves—have been used in herbal medicine to support urinary tract and bladder health. Folk and ethnobotanical sources document the use of Rubus leaf teas as mild astringents and diuretics. The astringent properties are attributed to the presence of tannins, which are believed to help tone mucus membranes, reduce inflammation, and potentially ease mild diarrhea and urinary tract irritation. In European and North American herbal traditions, Rubus idaeus (raspberry leaf) and Rubus fruticosus (blackberry leaf) have both been cited as agents to support the bladder, particularly in cases of mild cystitis or urinary discomfort.

However, while this traditional use is well-recorded, there is limited scientific research specifically validating Rubus leaf or fruit for direct bladder support. Most modern studies on Rubus focus on their antioxidant or anti-inflammatory properties in general, rather than urinary indications. Thus, the evidence for bladder support remains primarily traditional, with a moderate rating due to the consistency of historical use but lack of robust clinical validation.

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