Nolvadex (tamoxifen) is intended for patients with an early form of breast cancer that has been surgically removed. Another way it can be used is for the prevention of breast cancer in people from the high risk group. This drug works by blocking the activity of a female hormone estrogen that is required for any tumor in the best to grow. You should be aware of the increased risk of developing other kinds of cancer when taking Nolvadex, including liver cancer and cancer of the uterus. You may also develop cataracts that may require a surgery. If you have any symptoms not listed anywhere and think that it's because of taking Nolvadex make sure you report them to your doctor as soon as possible. You may be required to have some tests done to evaluate the reaction of your body to the treatment.