This has always puzzled me - in the UK the pharmacist keeps the prescription when he dispenses the drugs.
So this advice would mean you need to have two prescriptions!
Have to say, I travel most months and have never bothered to get a second prescription - the box has the pharmacists label with my name on it, I expect that to suffice.
Hi. Just ask for the copy prescription back, they have to give you it as you you/I need it for repeat prescriptions and for your own records. I have to carry a copy of all the drugs that I take in case of accident so Ive had this issue pop up myself.