I was after some suggestions for the best Anti-Estrogen supp, i think they are called AIs? I may be wrong. I have tried and seen a lot of info on the test boosters but i havent really tried a AI before, so was keen on getting some info on them. I think 6-oxo is a Anti-estrogen supp, is that right? I need to figure out which of them are allowed through customs in australia, so nothing that is prescription based.