Before your departure
Consult your doctor and/or local health authorities before your trip to find out which vaccinations are recommended, obligatory, unnecessary or indispensable when leaving your country of origin.
Ask your doctor if there are any health risks relative to the trip you are planning.
Get advice if the medication you might have to take throughout your travels, such as Malaria pills, is compatible with your usual treatment.
In case of a chronic illness or complicated previous medical history, ask your doctor to write a medical report, preferably in English, that summarizes your situation (background, description of your illness, past cases, results of recent tests, etc.) and mentions your usual treatment.
Have a duplicate of your prescription specifying the international name - the DCI (common international name) - of each of your medications, so you can replace it or quickly find its equivalent wherever you are.
While you are travelling