Nope! Not even in a different state, much less a different country.
What they do is prove to a doctor in an ER or clinic that you aren't drug-seeking, and gives them the exact medication & dose (patients are notorious for mixing up meds & doses), and a number to call your doctor at home to verify it's not a phony. The ED I worked in generally had between 5-10 people per night trying to scam drugs. It's nothing personal, not being believed, it's part of the job (and very few addicts "look" like addicts). So the copy just makes an easy button out of what is often otherwise impossible to very difficult situation.
It still usually takes 24 hours for an emergency refill (time zones, phone tag), which is why I break up my meds into 72hr & 24hr pieces kept seperate from my other meds. I've lost 1:3, and even 2:3 in the past for various reasons. But usually the emergency stashes are never even needed. Just save my ass those times they were needed!
I forgot to mention it... But it's usually a good idea to let your doctors office know you're going to be out of town if it's more than for just a few days. That way they get a call from Dr.Smith in Somewhere FarFarAway calling about filling a scrip for a patient who is right here in Anytown, USA... And they don't waste time trying to contact you at home to verify it's you & not someone who stole your identity. Part of the standard 24hr delay is the nurse making a reasonable number of attempts to contact you, before YourDoc signs off one FarFarAwayDoc refilling. So not only is ER doc verifying that you're not an addict, but home doc verifying that you're not an addict pretending to be you :)
Remember... This is all probably overkill. In all likelihood there will be no problem whatsoever. It's just prep work based on avoiding having BTDT, on a weekend, and have to wait 3 days while I'm being looked at suspiciously.