The medications you are referring to are called Aromatase inhibitors.
Aromatase is an enzyme. This enzymes function is to convert testosterone into estrogen.
An aromatase inhibitor binds to this enzyme therefore preventing testosterone from binding to it and as a result preventing the enzymatic conversion of testosterone to estrogen.
They will not cure gyno.
An AI (aromatase inhibitor) is used to keep estrogen in check during cycles containing aromatising AAS and to ensure low levels of estrogen leading into PCT and thus making the PCT more efficient and as a result the whole cycle more successful.




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