Please consult your physician before taking any medication. Brand name: Nolvadex Generic name: Tamoxifen citrate, Fenobest Why is Nolvadex prescribed? Nolvadex, an anticancer drug, is given to treat breast cancer. It also has proved effective when cancer has spread to other parts of the body. Nolvadex is most effective in stopping the kind of breast cancer that thrives on estrogen. Nolvadex is also prescribed to reduce the risk of invasive breast cancer following surgery and radiation therapy for ductal carcinoma in situ. The drug can also be used to reduce the odds of breast cancer in women at high risk of developing the disease. It does not completely eliminate your chances, but in a five-year study of over 1,500 high-risk women, it slashed the number of cases by 44 percent. Nolvadex may also be used for purposes other than those listed in this medication guide.