I tried methadone maintenance at least five different times longest I stayed was ten months and stayed clean until they started to wean me down and I was at a low milgram and with a bad day and wrong place I relapsed. Other times I would never go over 45 milgram so I could still use once a while and eventually I just would stop going. So like two to six months were the other longest times. I didn't like it going everyday being a slave to the clinic and there where more dope connections there than on the streets.