Dear Lactnetters, OOOPS! Contrary to what I just sent, coumarin is not noted for it's estrogenic effects - the chemical I was thinking of is coumestrol - probably the strongest phytoestrogen but not, apparently, in fenugreek! Coumarin is in fenugreek, has noted hypoglycemic effects and would still consider it in possibly having a hand with lactation somehow but other than antiandrogenic and anti-inflammatory effects listed in Duke's lists of pharmacological effects of plant constituents, does not list estrogenic. Sorry. Sheila Humphrey