Why is it important to wherever you go, be it a short trip or a long journey, a cruise or an overseas flight, your prescription(s), or at least a copy, should always be included with your travel documents.
You never know where and when in “foreign territory” to get your prescription meds refilled when you run out. Misplace or lose your medications and the refill can become a nightmare. Need to go see a foreign doctor, or visit a pharmacist to call your doctor may just fry your nerves too much when in distress over getting that desperately needed refill. Especially when languages become an issue.
Save yourself the headaches and that stress, because with a prescription in hand, no pharmacy in the world will deny you your medications, no matter the circumstances. In addition you may even find yourself in destinations where medicines are sold at a much friendlier price level than what you are accustomed to.