Sorry but I have no link or source for this one. My father just told me that he heard about this in news. They also said that there is not currently available any replacement drug for amphetamine addiction. This study is done or going on here in god's abandoned country in Kuopio's university, just some kilometers away from where I live. Sorry if this thread isn't yet of any use to anyone, but I'll try and find some article about this if one appears. Didn't find anything yet, so I guess the study is still on.