When we talk about the most comomly aromatase inhibitors(AI) for bodybuilders, there must comes out the name of Letrozole. What is Letrozole, how it works and how should bodybuilders use it ? Let’s talk about it. What is Aromatase inhibitors Letrozole? Letrozole belongs to a class of drugs called nonsteroidal aromatase inhibitors(AI). It is administered orally and is a selective …