LETROZOLE blocks the formation of the hormone estrogen. Some types of breast cancer need estrogen, and letrozole stops tumor growth by decreasing estrogen levels. Letrozole is for the treatment of breast cancer in postmenopausal women only http://www.wikio.com/article/femara-5mg-buy-182075611 - femara 2.5 mg
What should my health care professional know before I take this medicine?

They need to know if you have any of these conditions:
liver disease
osteoporosis
an unusual or allergic reaction to letrozole, other medicines, foods, dyes, or preservatives
pregnant or trying to get pregnant
breast-feeding