Tamoxifen is a drug that both men and women can use to treat breast cancer. In addition, it is applied to women who have a high risk of getting breast cancer. This medication aids in reducing the development and division of cancer cells. Tamoxifen belongs to the group of drugs known as ant estrogens. The generic Tamoxifen pill inhibits the action of estrogens in the breast. Some breast tumors that depend on estrogen to develop may have their growth stopped by this. Women who are at high risk for breast cancer because of their age, individual medical history, and family medical history might use the drug tamoxifen as a safety precaution.