Synopsis

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

Cranesbill (Geranium maculatum), commonly known as wild geranium, has a history of traditional use in herbal medicine, particularly among Native American and European herbalists. It has been used as an astringent to help with bleeding, diarrhea, and inflamed mucous membranes. The astringent properties are attributed to its high tannin content, which can constrict tissues and theoretically help reduce capillary fragility and bleeding. In folk medicine, preparations of cranesbill were sometimes applied topically or taken internally to address minor capillary bleeding (such as nosebleeds or bleeding gums), and to promote wound healing.

However, scientific studies specifically supporting the use of cranesbill for capillary support are lacking. While the astringency due to tannins is well documented and could plausibly reduce minor superficial bleeding, there are no robust human clinical trials demonstrating efficacy for strengthening capillaries or treating capillary fragility. Most modern herbal references cite the traditional uses but do not present clinical data. Thus, its reputation for capillary support is based on longstanding traditional use rather than scientific validation.

In summary, cranesbill is used traditionally for its astringent effects, which may secondarily support capillary health by reducing bleeding, but there is limited direct scientific evidence to substantiate its effectiveness for this specific purpose.

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