Maul R., Kulling S.E. (2010) Absorption of red clover isoflavones in human subjects: results from a pilot study. Br J Nutr 103:1569-72 PubMed (20067656)

Compound Mean content
Biochanin A 4.35 mg/capsule
Formononetin 9.45 mg/capsule
Daidzein 0.65 mg/capsule
Glycitein 0.6 mg/capsule
Genistein 0.1 mg/capsule