Wiktionary
paeoniflorin
n. (context organic compound English) A chemical compound found in (taxlink Paeonia lactiflora species noshow=1), used in herbal medicine.
Wikipedia
Paeoniflorin
Paeoniflorin is a chemical compound. It is one of the major constituents of a herbal medicine derived from Paeonia lactiflora. It can also be isolated from the fresh water fern Salvinia molesta.
In Paeonia, it can form new compounds with addition of phenolic substituents. Paeoniflorin has antiandrogenic properties. Paeoniflorin inhibits the production of testosterone and promotes the activity of aromatase - the enzyme that converts testosterone into estrogen.