Answer: Do you normally have a lot of trouble sleeping through the night? I mean I'd been running ragged for days with last minute meetings, setting up the reception hall, running errands--I was utterly exhausted. At the rehearsal dinner, I was so exhausted I think I was asleep by 1030. I don't think I've ever slept as soundly as I did that night.How stressed are you about the wedding? How organized are you? Some brides have a lot to do the last week and therefore have added to their stress level. I had finished everything I had to do way beforehand so the last week had very little stress, merely a lot of appointments to keep with picking things up and getting manicures/pedicures. Disorganized brides who fear something is not getting done have more panic--so in your case with panic disorder, I would try to make sure everyone was an organized as possible.However if you normally do not sleep through the night, I agree you should not try one the night before. I would test out some things now and how they may interact with your medication just to make sure they don't make you drowsy or worse the next day. You don't want a medical interaction between medications!! Melatonin tablets or benadryl have been the most effective for me, but I have never tried a Rx.If you want to try, try it out one day several weeks before the wedding just so you know how your body will react.