This content has been updated - view the USDA Database for the Isoflavone Content of Selected Foods, Release 2.1 (November 2015) at https://doi.org/10.15482/USDA.ADC/1324538 for version 2.1 data, or visit the USDA Special Interest Database on Flavonoids dataset at https://doi.org/10.15482/USDA.ADC/1178142 for links to the most current data. This database contains data on the isoflavone content of 557 food items. Isoflavones included in the database are daidzein, genistein, glycitein and total isoflavones. Other phytoestrogens (coumestrol, biochanin A, and formononetin) are included as a separate table in the PDF report and in the database.