I just wanted to add to the thread . I was using heroin and oxy's everyday for about 2 months. Sniffing both. I was using about 7 bags a day. I got on subutex here's how I took it. I was on for a total of 21 days. First 3 days 8 mgs. After that the next 4 days I took 2 mgs. The next 7 days I took one mg a day. The next 3 days I was taking crumbs probably equivalent to .50. The last 4 days I was taking crumbs like .25-.15 mgs . The only time I felt a difference was the last week I experienced some hot cold flashes. I'm on day 4 now off the subs . I don't feel 100 percent maybe like 70 . The second and third day I felt some anxiety but so far so good. Nothing like the methadone withdraw I remember. God bless everyone