Grrr I hate it when this happens, don't you? I carry my pain meds in a little metal vial on my keyring. I keep some in my wallet, and I also have some in the car, and naturally by the bed.

What time of day are you trying to take it. Morning and you aren't getting up at the same time? Do you leave the house the same way each day? Can you put a sticky note on the door you leave by? Of course it would be nice to have an alarm set on a 24 hour basis to remind you...