So, I've been doing the methadone program for about 3 years now after a pretty good run on heroin, I'm taking 100mg a day. My question is I'm been craving coke now for a while. I've done coke in the past before my heroin days, was never addicted, basically just used it occasionally when I partied. The question is should I be concerned about any problems with the coke and methadone in my system? Will the methadone effect the coke rush at all? It's the whole upper and downer thing that worries me some and id not that will I still get the same coke high? I know methadone doesn't block coke, but will it change the feeling at all?