A few guys stay on Ox. for several months, some say that it is liver toxic while others get tests done during extended cycles of var without much changes in liver values. Jeff_rys, Manny78, liftsiron, are among the few that have ran var for extended periods if I'm not mistaken, changing there dosages through out and said that they got great results from it.
Distanced and bumpo what types of Ox. will/have you be running/ran?