Keep all prescription medicine for air travel in its original packaging with the pharmacy label visible. For international travel, it is wise to carry a copy of your prescription or a doctor’s letter. Over-the-counter (OTC) medicine can usually be packed in your carry-on or hold luggage, but always check the local laws of your destination.
The 100ml limit typically does not apply to essential medicines, though you must declare them to security. For those wondering how to travel with medicine that needs to be cold, use a high-quality insulated medical cool bag with gel ice packs. Always notify your airline in advance if you need to travel with refrigerated medicine to see if they can assist with the flight.