Brand name for the hormonal drug tamoxifen.

A drug used to treat certain types of breast cancer in women and men. It is also used to prevent breast cancer in women who have had ductal carcinoma in situ (abnormal cells in the ducts of the breast) and are at a high risk of developing breast cancer. Nolvadex is also being studied in the treatment of other types of cancer. It blocks the effects of the hormone estrogen in the breast. Nolvadex belongs to the family of drugs called antiestrogens. Also called tamoxifen and tamoxifen citrate.

Trade name for tamoxifen; an antiestrogen drug commonly used in breast cancer therapy. ( See also antiestrogen, tamoxifen, hormonal therapy).