This combination of herbs contains many compounds especially flavonoids and triterpene glycosides. Three herbs in this tablet contain standardized levels of key phytochemicals to ensure optimal strength and quality: 20 mg of icariin per tablet (from Epimedium), 28 mg/tablet of isoflavones from Kudzu (daidzein, daidzin, puerarin) and 8 mg/tablet of Red Clover isoflavones.