Buprenorphine / naloxone
"I began Suboxone a week ago while in quite bad withdrawal from heroin. I was in a detox facility and lying on the dirty bathroom floor crying, because of so much pain in my abdomen. The nurse gave me a Suboxone and within an hour to an hour and a half I was up and eating and felt no pain whatsoever, even my arthritis didn't hurt. 
While I am afraid of withdrawing from the Suboxone, I know it can't be as bad as that day on the bathroom floor. 
Not only has it helped with my addiction to heroin, but I had to stop taking my Xanax in order to take the Suboxone and I haven't had a craving or desire for the Xanax either. I have been taking Xanax for 5 years or more and found Suboxone removed the withdrawal from them also."