60 mg of Isoflavones Cardiovascular Health Isoflavones are naturally occurring plant compounds that are particularly concentrated in soybeans. Genistein, Daidzein and Glycitein are the major Isoflavones found in soybeans. NOW Soy Isoflavones have been extracted through a unique process that results in higher levels of Genistein - a quantum leap over most Soy Isoflavone products.