Traveling internationally with prescription medication requires careful documentation to avoid legal issues or confiscation. You should always carry your medication in its original pharmacy packaging with the professional label clearly showing your full name (matching your passport), the doctor’s name, and the generic drug name. It is essential to have a "Letter of Medical Necessity" from your physician that explains your condition and lists all prescribed medications and dosages. For travel in 2026, many countries also recommend or require a digital declaration—such as the Atithi App in India—before you land. If you are carrying "controlled substances" like strong painkillers or stimulants (e.g., Adderall), you are typically limited to a 30-day supply and may need to seek advance permission from the destination country's embassy, as some medications that are legal in the U.S. are strictly banned abroad. Always pack your life-saving medications in your carry-on bag, not your checked luggage, to ensure you have them in case of delays and to protect them from the extreme temperature fluctuations found in an aircraft's cargo hold.