Shedo82773, I don’t take methadone for pain but as maintenance medication for addiction. I am wondering if you were actually allergic to methadone as I have never heard of those reaction to it before! I do know you can’t just jump off it as you’ll go into serious withdrawal, just like any other opiate. I am exploring other options now, like Suboxone, but I have to taper off the methadone completely first.