I've been on for 8 mos, but came off for 16 mos. I believe the longer you stay on the more time you should take away from it when you do come off it. In all reality as long as you throw in some kind of PCT I would not see a problem in it. Blood tests and sperm counts( if you ever want to have kids again) should be a priority. I would truly sit down with your doctor and tell him/her your intentions if this is what you want to do.