Always travel with your medications and if traveling includes a flight, put all your drugs in your carry-on. You'll especially want those drugs you need for immediate treatment:
- inhalers for shortness of breath
- nitroglycerin for chest pain
- Epi-pen and Benedryl for anaphylaxis
- antiarrhythmia medications for rapid heart rates
- glucagon or glucose tablets for hypoglycemia
You may need permission to carry liquid medicines onto the aircraft, which is why I recommend anyone prone to low blood sugar carry glucose tablets instead of gel. It may seem silly to carry glucose since there is food available on the plane, but flight attendants aren't always allowed to come to your assistance. If it works for you, a candy bar may also work.
Pack your important medical information. If someone is riding with you, make sure he or she has a copy of your medical info. If you're alone, wear a medical bracelet or keep something in your wallet or purse with medical information on it.
Remember, if there is a medical emergency, you may find yourself in a city you didn't plan for. Having some basic information, as well as your doctor's phone number with area code (and country code if you're abroad) will help the medical providers that help you. Some airlines even consult with doctors on the ground in the event of a medical emergency; having some medical information about you will help them better direct the crew in the air.