Synopsis

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

Blackberry (Rubus fruticosus) leaves and roots have a long history of traditional use for treating external bleeding and wounds. In folk medicine, particularly in European and Native American herbal traditions, poultices or infusions made from blackberry leaves were applied topically to cuts, scrapes, and minor wounds to help stop bleeding and promote healing. The astringent properties of blackberry are attributed to its high tannin content, which can constrict tissue and blood vessels, thereby reducing bleeding and aiding in wound contraction. Historical herbal texts, such as those by Nicholas Culpeper and various 19th-century materia medica, frequently mention blackberry’s use for staunching blood.

Modern scientific evidence supporting this use is limited but plausible. Experimental studies confirm that blackberry leaves are rich in tannins, flavonoids, and other polyphenols known for their astringent and antimicrobial effects, which may contribute to hemostasis and infection prevention. However, there are few clinical studies directly evaluating the efficacy of blackberry on external bleeding in humans. Most support comes from in vitro or animal models demonstrating astringency and antimicrobial activity. As a result, while there is a strong traditional foundation and some supportive phytochemical rationale, robust scientific validation—especially from randomized controlled trials—is lacking. Therefore, blackberry’s use for external bleeding is primarily justified by tradition, with modest supporting evidence.

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