Letrozole raw powder is white color from suppliers, the raw powder is used to make oral pills name femara. Letrozole (Femara) raw powder is a non-steroidal aromatase inhibitor. Letrozole does not possess the characteristic four ring cycloalkane ring carbon structure common of all types of steroids, unlike the steroidal aromatase inhibitor Aromasin (Exemestane).  Letrozole blocks an enzyme in the body which converts male hormones to female hormones. Letrozole use will result in a decrease in the levels of estrogen. This decrease in estrogen tells a part of the brain (called the pituitary gland) to make more of a hormone called Follicle Stimulating Hormone (FSH). When this hormone increases, it stimulates the ovary to produce eggs and follicles.


Letrozole (Femara) has caught on naturally with anabolic steroid using athletes, bodybuilders, and invidiuals, as is common with all aromatase inhibitors. This is because of the Estrogen controlling and reducing capability of Letrozole, which is favored in anabolic steroid users that are engaging in the use of aromatizable anabolic steroids (such as Testosterone, Dianabol, Equipoise, etc.) and that it can be effectively utilized to control issues resultant of excess Estrogen (bloating, blood pressure, gynecomastia, etc.).


Letrozole, as is common with all aromatase inhibitors has also demonstrated the ability to increase the endogenous production of LH (Luteinizing Hormone), FSH (Follicle Stimulating Hormone), and consequently, Testosterone levels in men, but this will be further covered in greater detail under the Letrozole doses section of the profile.

Bodybuilders and athletes utilizing anabolic steroids will usually favor aromatase inhibitors such as Letrozole for its ability to eliminate rising Estrogen levels at its root cause: aromatase. By disabling the aromatase enzyme, supraphysiological levels of aromatizable androgens (such as Testosterone, Dianabol, Deca-Durabolin, etc.) cannot convert into Estrogen, thereby eliminating any possible risk of Estrogen-related side effects.