i know some people who have been using for about 8 months straight now...their list contains test, dbol, anadrol, Winstrol (winny), eq, tren...maybe some other stuff. they are definitely large. real smooth though, and i imagine without any sort of test production. seems like a bad idea to me if you're using bodybuilding dosages (these guys are running, 1200mg/wk test and such) but to each his own.