Synopsis

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

Fleabane, referring to several species within the genera Erigeron and Conyza, has a history of use in traditional herbal medicine systems for treating gastrointestinal complaints, including diarrhea. Ethnobotanical records from North America, Europe, and Asia indicate the use of various fleabane species as astringents and anti-diarrheal remedies. Native American tribes, for instance, used infusions or decoctions of fleabane leaves or aerial parts to alleviate diarrhea, likely due to the plant's purported astringent properties. The astringency is attributed to the presence of tannins and other phenolic compounds, which can help constrict mucous membranes and reduce intestinal secretions. However, while historical and ethnomedical accounts are relatively common, there is a lack of modern clinical research specifically evaluating fleabane’s efficacy for diarrhea in humans. Some laboratory studies on related plant species have demonstrated mild antimicrobial and anti-inflammatory effects, which may theoretically contribute to its traditional use for gastrointestinal disturbances. Nevertheless, without well-designed human clinical trials, the evidence remains limited to traditional use and anecdotal reports. Thus, while fleabane’s application for diarrhea is well-documented in folk medicine, it lacks robust scientific validation.

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