Widespread isoflavone found in soy beans (Glycine max), red clover (Trifolium pratense and chick peas (Cicer arietinum). Potential nutriceutical Formononetin are abundant in vegetables. It is a phyto-oestrogen that is a polyphenolic non-steroidal plant compound with oestrogen-like biological activity (PMID: 16108819). It can be the source of considerable estrogenic activity (http://www.herbalchem.net/Intermediate.htm).