Synopsis

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

Rhus glabra (smooth sumac) has been traditionally used by various Indigenous peoples in North America for the management of external bleeding. The plant's astringent properties, mainly attributed to its tannin content, are believed to help constrict tissues and promote hemostasis when applied topically. Historical ethnobotanical records document the use of poultices made from the leaves or bark of Rhus glabra to treat wounds, cuts, and bleeding ulcers. However, while these uses are well-supported in traditional medicine and ethnobotanical literature, there is a lack of modern clinical or laboratory studies directly validating its efficacy or safety for this indication. The evidence, therefore, is grounded in longstanding traditional use rather than scientific validation. Care should be taken, as plant identification and proper preparation are essential to avoid exposure to potentially irritating compounds found in related species. In summary, Rhus glabra’s use for external bleeding is justified by its historical application in folk medicine, but there is little high-quality scientific data to confirm or refute its effectiveness.

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