To be perfectly honest with you, I would in your shoes make bloody certain that I never got into a situation where I will run out of pill's before being rescued. Right, having said that, and accepting that the Fate's will try and Darwin you. I suggest that you find a container that will go on a dogtag chain around your neck. Just big enough for a couple of day's medication. Put the rest in a separate tin. Put the tin in a pouch on your belt. (picked that idea up off a college who's diabetic). I think being in a situation with someone who is medically vunerable is one of my major worries.