Hay fellas,I want everybody to understand that unless you are experiencing tiny little "zaps" behind your nipples, sensitive lumps and or you get blood work done and check your estrogen levels you probably just do not want to lower to estrogen with estrogen blockers or Aromatase Inhibitors. The reason why is Testosterone when coverting to estrogen is only around 1%. Dropping estrogen can make your jounts dry up and can lower you LH levals too witch can kill your sex drive. take my advice please becouse its true. Keep those drugs on Hand Yes. But do throw in them into your cycle just becouse your dealer says " bro you need estrogen blockers" ; )