Letrozole

 

Letrozole can effectively inhibit the transformation of androgen to estrogen, and the activity of letrozole is 150~250 times stronger than that of the first generation aromatase inhibitor. Due to its high selectivity, no effect of glucocorticoid, mineralocorticoid and thyroid function, the use of large dose of corticosteroid substances secretion had no inhibitory effect, so it has a higher inhibitory effect of estrogen. Preclinical studies have shown that letrozole has no potential toxicity to all systems and target organs of the whole body, and has the characteristics of good tolerance and strong pharmacological activity. Letrozole is Widely used by bodybuliders in Australia and United States.

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