Letrozole is used in the treatment of breast cancer. Letrozole is a nonsteroidal competitive inhibitor of the aromatase enzyme. The growth of cancers is mainly due to estrogen hormone. Aromatase enzyme inhibitor achieves the suppression of estrogen biosynthesis in peripheral tissues and in cancer tissues. Letrozole reduces the uterine weight, reduces the progression of estrogen-dependent tumors and elevates the level of LH in blood. The treatment of breast cancer with Letrozole is estrogen or progesterone receptor responsive. Femara is an antiestrogen or progestational agent. With the introduction of generic variants, you can now buy Letrozole here at Rx 2 Go Pharmacy.