Toremifene is a hormonal therapy used to treat women with breast cancer who have had their menopause (change of life). It is occasionally used to treat women whose cancer has spread to other areas of the body (advanced breast cancer). Hormonal therapies interfere with the production or action of particular hormones in the body. Hormones are substances produced naturally in the body. They act as chemical messengers and help to control the activity of cells and organs. (http://www.cancerbackup.org.uk/)