I won't repeat all of the reassuring things already said. I think you have had some great responses. I, too, was really freaked about going on methadone. I have always told all of my PM docs that I was afraid of addiction or getting totally 'zoned out.' But, I had always been assured that meds taken for pain will not do that. Only recreational use leads to addiction. (That's an over-simplification, but generally true.)

I have never felt loopy from any of these kinds of drugs, even the methadone. This is why you start small and work up until you get the relief expected, and no more. I ended up taking about eight times more than my starting dose. A good PM doc will know how to help you manage this.

Mike