The related species Astilbe rivularis has been used in traditional medicine: Astilbe rivularis Buch. Ham., a rhizomatous perennial herb of the Saxifragaceae family, has been listed in rare species. In traditional medicine the plant has been used for the treatment of ulcer, bleeding during child birth, inflammation, body ache, diarrhea, and dysentery

https://pubmed.ncbi.nlm.nih.gov https://pubmed.ncbi.nlm.nih.gov/27225295/#:~:text=Astilbe%20rivularis%20Buch.,ache%2C%20diarrhea%2C%20and%20dysentery.