Letrozole lowers estrogen levels in postmenopausal women, which may slow the growth of certain types of breast tumors that need estrogen to grow in the body.
Letrozole is used to treat breast cancer in postmenopausal women. It is often given to women who have been taking tamoxifen (Nolvadex, Soltamox) for 5 years.
Common side effects may include:
- hot flashes, warmth or redness in your face or chest;
- headache, dizziness, weakness;
- bone pain, muscle or joint pain;
- swelling, weight gain;
- increased sweating; or
- increased cholesterol in your blood.