Arzoxifene is a synthetic, aromatic derivative with anti-estrogenic properties. Similar to the agent raloxifene, arzoxifene binds to and interacts with estrogen receptors as a mixed estrogen agonist/antagonist. This agent exhibits greater bioavailability and higher anti-estrogenic potency in the breast than does raloxifene; it exhibits reduced estrogenicity in the uterus compared with either tamoxifen or raloxifene. Arzoxifene may have beneficial effects on bone and the cardiovascular system (NCI04)