STOP POSTING every single question you have about all these, use the search, every question has been pretty much the same. They are AS, dont take them under 21, use PCT and Niacin, Berry Extract, Milk Thistle during and Clomid and Nolva for PCT, no ifs ands or buts, USE CLOMID AND NOLVA. Low doses to start out with to see how you react.