I've been putting an emergency kit together whenever I'm traveling (I've not had to use it......as yet!).
Apart from the things already mentioned I also have: a Depends (disposable underwear, just in case I have got to be out and things flare up really badly) travel-size antibacterial hand gel, travel-size pack of antibacterial wipes (just in case, the toilet doesn't look too clean), a bottle of Ensure, Tylenol.