Synopsis

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

Cranesbill (Geranium species, especially Geranium maculatum) has a long history of traditional use as a remedy for external bleeding. Herbalists and indigenous peoples in North America and Europe have employed the powdered root or astringent preparations of Cranesbill to staunch wounds, cuts, and other forms of minor external bleeding. The root contains high levels of tannins, which are known for their astringent properties—helping constrict tissues and blood vessels, thereby reducing bleeding and promoting clotting at the site of injury.

Despite this widespread traditional use, there is a lack of robust scientific studies—such as randomized controlled trials or systematic pharmacological research—directly validating the efficacy of Cranesbill for external bleeding in humans. The evidence for its astringent action is primarily extrapolated from its phytochemical content (notably tannins) and analogous effects observed in related plant species. Reports in herbal pharmacopeias and ethnobotanical literature consistently mention its use for this indication, but contemporary clinical evidence remains limited.

In summary, the use of Cranesbill for external bleeding is justified primarily by tradition and historical usage, supported by an understanding of its phytochemistry, but lacks strong modern scientific validation.

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