Hairy agrimony (Agrimonia pilosa), known in Chinese herbal tradition as Xian He Cao, is a Rosaceae perennial distinct from the European agrimony Agrimonia eupatoria already covered elsewhere in this guide. This article reviews its traditional astringent and hemostatic reputation, tannins, flavonoids and agrimonolide, mostly preclinical anti-inflammatory and antiviral research, the shortage of rigorous human trials, and an important contradiction: an older animal study prolonged bleeding and coagulation times rather than supporting simple home use to stop bleeding.
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