Estrogens are produced by the conversion of androgens by the activity of the aromatase enzyme. Estrogens then bind to an estrogen receptor, which causes cell division. This product makes it possible to rebalance this.
Basically Letrozole is a drug that has been developed to fight breast cancer by inhibiting aromatization. It is generally used as part of aggressive treatment in postmenopausal women, to fight and reverse the spread of breast cancer after other treatments have failed (such as tamoxifen therapy). This is probably the most effective product on the market for this purpose currently, it is very similar to the structure and action of its predecessor the arimidex.
Letrozole is also particularly interesting for bodybuilders and athletes. First, it has been proven to reduce estrogen levels to 98% or more. This is obviously a huge interest for bodybuilders. Indeed, less estrogen in the body eliminates the side effects of steroids such as water retention, gynecomastia, and acne. This makes Letrozole one of the best anti-estrogens on the market, even for very difficult cycles. Also, if you perform bodybuilding competitions Letrozole helps to have a dry and striated muscle. The effective dose for letrozole is 2.5 to 5mg daily. If you exceed this dose, there may be a risk of loss of libido. In addition, if you keep your estrogen levels too low for too long, you will eventually weaken your immune system.
It should be noted that letrozole, can also be used in post-cycle therapy to make a recovery. Indeed letrozole increases LH and FSH (which are hormones that boost your testes to produce more testosterone) Letrozole is 2 to 5 times more potent than anastrozole (arimidex), and lomgtemps in the body, but takes a while to launch. You need to take letrozole for 60 days in order to get a balance in the blood plasma. Even more impressive, letrozole can reduce or eliminate an existing gynocomastia back! In conclusion, letrozole is a complete anti-estrogen that protects during and stimulates after the cycle, it eliminates the negative effects of steroids while providing an aesthetic advantage on the quality of the muscle.