Synopsis

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

Rubus ursinus, commonly known as the Pacific blackberry or trailing blackberry, has a history of traditional use by Native American tribes in North America for various medicinal purposes, including supporting oral health and gum issues. Historical ethnobotanical records indicate that parts of the plant—particularly the leaves—were brewed into teas or used as a mouthwash to soothe inflamed gums, treat mouth sores, and address minor oral infections. These uses are likely attributed to the plant's astringent properties, owing to its tannin content, which can help tighten tissues and reduce minor bleeding. However, while there is consistent documentation of these traditional uses, there is little to no modern clinical research specifically validating the effectiveness of Rubus ursinus for gum health. Most scientific literature focuses broadly on the Rubus genus or on related species such as Rubus fruticosus (European blackberry), which have demonstrated antimicrobial and anti-inflammatory properties in laboratory settings. Thus, the evidence supporting Rubus ursinus for gum health is primarily traditional, with a modest rating due to the lack of robust scientific validation.

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