Hormone Therapy Breast Cancer

Hormonal therapy is a very effective treatment against breast cancer that is hormone-receptor-positive. Find out if you should be tested to see if you need other therapies, as well. Sometimes called "anti-estrogen therapy," hormonal therapy blocks the ability of the hormone estrogen to turn on and stimulate the growth of breast cancer cells.
For years, tamoxifen was the hormonal medicine of choice for all women with hormone-receptor-positive breast cancer. But in 2005, the results of several major worldwide clinical trials showed that aromatase inhibitors (Arimidex [chemical name: anastrozole], Aromasin [chemical name: exemestane], and Femara [chemical name: letrozole]) worked better than tamoxifen in post-menopausal women with hormone-receptive-positive breast cancer.

read more at http://www.breastcancer.org/treatment/hormonal/