Methadone is a totally different opiate compared to most if not all the other opiates.It has a 72 hr halflife which makes it last a long time.It binds to the opiate receptors like glue and other opiates like
oxycodone and
hydrocodone are pretty much useless.
Detoxing off methadone is also alot different then coming off say
morphine in that you need to wean down very slowly.
Start by staying at your 20mg a day for a week more.The golden rule with methadone detox is to come down no more than 10% every 2 weeks.This allows your serum level to come down and level out to the new dose which takes about 5 days.Most clinics ect try and keep the patient on the same dose for a month then drop them down 10% every month until they get to 1-.5mgs a day.
For
suboxone use you need to get down to 30mgs a day of methadone.Once on suboxone you can try a 6 week detox.This does work for some people and really in your case it may be the way to go seeing that you aren't a addict.
Go to
www.suboxone.com and read up on suboxone(buprenorphene).
Then talk to your doctor and see what he\she thinks..Good luck....Dave