Letrozole

Letrozole powder was often sold under the trade name Femara, which is a tablet form in the market. It is one of the first-line treatments for breast cancer that helps improve survival rates, but it is only used in post-menopausal women.

Athletes who abuse anabolic steroids may use aromatase inhibitors such as letrozole powder to prevent the formation of estrogens, thereby reducing or eliminating the undesirable and feminizing effects of anabolic steroid use. These side effects include the development of male breasts (gynecomastia), fluid retention, and abdominal fat. In addition, male athletes may use aromatase inhibitors such as letrozole powder to increase their natural testosterone levels by preventing its degradation.