I was given half a 'suboxone' by a recovering addict friend. Sucked on the nasty 'orange' flavored pill (with a big cross imprinted on it), after a drink or two. After about an hour, I was filled with a definite but not overpowering sense of stoney happiness and well-being, but in particular there was a positive, almost mdma-like sense of opening up unlike other opiates I've tried. It lasted for a good four hours, then afterglow for a half day more. It seems to let me down slowly enough to mitigate any crashing/ withdrawal. Only thing is, for the next 12 hours, I literally couldn't pee. It was very upsetting.