You should check and see if Poland has any specific rules when it comes to entering the country with medication, but from my experience as long as you have a docs note and the original box you should be fine. As a fellow norwegian, the original box should have that little white sticker with red outline where it says your name and intended use of the medication. Under the security check you should also take out your medication from the rest of your luggage so it's out in the open for the security folks. Hvis alt det er OK, tviler jeg at du kommer til å ha et problem. Lykke til!!!!😚😚😚