http://www.searchbreast.com/templates/Default/img/logo.gifhttp://www.searchbreast.com/http://www.searchbreast.com/herceptin/http://www.searchbreast.com/herceptin/Breast-Cancer-Care-Herceptin-l59.htmlHerceptin is a drug that treats breast cancer and improves the way the body fights the breast cancer cells. It belongs to a new group of drugs called monoclonal antibodies.