I don't know what "accident" (or even "incident") you're talking about. What happens is: the guard looks at the bottle, asks if I have a prescription. I show the (fake) paper, they look at it, nod and let me go. No record is ever made of this.

Most of the time, the guard doesn't even speak the language; I'm not sure they're even trying to read it, they're just ticking a box in their mind that says "there was a paper".

My guess is, it would work with any paper; I may try that some day (show a completely unrelated prescription, or something that isn't even a prescription).