Sarah, there is a med called Suboxone that I used to counteract withdrawal from Fentanyl, but you can't be on any opiod meds at all when you take it or you will get sick. It does help. only a doc that holds a special license write a script for it. I only took it for 3 weeks or so, I should have taken it for much longer...I was a pretty much a mess...I can so relate to how you feel.

good luck. Sandy