How Does Tamoxifen Work in Breast Cancer Contents Title Show Contents Title What is Tamoxifen Mechanism of Action Effectiveness of Tamoxifen Side Effects and Precautions Consult Your Insurance Company Frequently Asked Questions How Does Tamoxifen Work in Breast Cancer Tamoxifen is a drug used to treat breast cancer. It can help stop the cancer from growing. … Continue reading How Does Tamoxifen Work in Breast Cancer