1. Heinonen SM, Wahala K, Adlercreutz H: Identification of urinary metabolites of the red clover isoflavones formononetin and biochanin A in human subjects. J Agric Food Chem. 2004 Nov 3;52(22):6802-9. [PubMed:15506819 ]
  2. Lipovac M, Pfitscher A, Hobiger S, Laschitz T, Imhof M, Chedraui P, Jungbauer A: Red clover isoflavone metabolite bioavailability is decreased after fructooligosaccharide supplementation. Fitoterapia. 2015 Sep;105:93-101. doi: 10.1016/j.fitote.2015.06.011. Epub 2015 Jun 11. [PubMed:26073948 ]