am,
Tamoxifen is a drug that blocks the
action of the hormone estrogen. Side effects
of this drug may include : nausea, hot flashes, weight gain or headache. (http://www.medicinenet.com/tamoxifen-oral/article.htm)
FEMARA (letrozole tablets) is approved for the adjuvant treatment of postmenopausal women with hormone receptor-positive early breast cancer.