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Letrozole is an aromatase inhibitor that is used to treat hormone-positive breast cancer or breast cancer with unknown receptor status. It is used for postmenopausal women who have local or metastatic breast cancer by blocking the action of aromatase, which converts androgens into estrogens. It is different from tamoxifen in terms of the impact area. Tamoxifen is used for pre-menstrual women reducing estrogen in the ovaries while letrozole is for post-menstrual women acting on estrogen in the peripheral tissues. It is an effective alternative treatment of mifepristone as this medication is mostly unavailable and expensive. It can be used also to treat gynecomastia as an effect of an anabolic steroid cycle. Also, it can be used as nonobstructive azoospermia treatment in male patients to improve spermatogenesis. Its ability to affect hormone can help with diseases related to hormone receptors such as endometriosis. Aromatase inhibitors such as letrozole reduce the activity of hormones that cause inflammation process in ovaries. You can buy Letrozole online on our website and we guarantee fast shipping to USA or UK and cheap prices.