Thanks for writing in to Healthcare Magic!
The gastrointestinal bleeding
is a serious disease and can be life threatening.
It is not an expected complication of methadone
It can be some parallel problem.
Another important thing is that you can not stop methadone by yourself.
You need to consult a physician for both the problem, for methadone weaning and for managing gut bleed. Please consult as soon as possible to limit complications.
If you have any further query please let me know I would try to answer it for you.
Wish you a great health!