A few years ago I was given some - I took it at 11pm, went to bed, and didn't wake up for 18 hours. I was totally out of it for 3 days. Just from 1 pathetic little dose. I had never had it before, and I've never taken it since - and it's in my chart not to give it to me ever again! Any "sleep aid" like tylenol pm takes 2 days or longer too. Maybe I'm just super sensitive to things like that. But you just may feel groggy for another day.
at 5:15 PM on Feb. 27, 2011
Good grief! I would think it would be out of your system by now. I know when I have taken a cough syrup with codeine in the past, in 4 hours or so I was over the effects of it. I'd call your the pharmacy and ask them.