Funny you should mention this...
I was picking up my daughter Antibiotics today and the lady right next to me was picking up her pills (narcotic of some sort) and I could see that "out of it" look in her eyes and the way she was aged beyond her years etc. Now I know that some people take narcotic medications and are not addicts but I can spot one, like you can. I let my husband finish up the transaction and went off to look for some neat hair gunk. Wurghty.