I am not a doctor. I can give you my experience. 10mg. of methadone is a very small dose. I have detoxed off of 45mg. methadone twice. Once cold turkey (just quit). The second time I used suboxone. If I was on 10mg of methadone and codeine (is a by product from making heroin). I would stop taking the codeine and taper down on the methadone a little at the time. When I was down to 2.5 mg I would stop taking it (methadone). At that point I don't think I would have any withdrawals. Methadone has a 48 hour half life. On 45mg of methadone I could go 2 days with out being in total withdrawal. This is just my experience. Hope this helps.