Yeah the increase from heroin to fent would be like drinking a wine cooler (2%) that's actually everclear (95%). I don't know any user of any substance that wo

Yeah the increase from heroin to fent would be like drinking a wine cooler (2%) that's actually everclear (95%). I don't know any user of any substance that would say "well 1 unit is likely to get me off a bit, so I think I'll take 20 just to be sure".