Skip to main content
An official website of the United States government
Español
Government Funding Lapse
Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

Fareston

(FAYR-es-ton)
A drug used to treat postmenopausal women with breast cancer that has spread to other parts of the body. It is used in patients whose cancer is estrogen receptor positive (ER+) or when it is not known if the cancer is ER+ or estrogen receptor negative (ER-). Fareston blocks the effects of the hormone estrogen in breast tissue, which may help keep breast cancer cells from growing. It is a type of selective estrogen receptor modulator (SERM). Also called toremifene citrate.
More Information
Search NCI's Dictionary of Cancer Terms