It is very important that you remember to take all your medicines with you on holiday and that you take enough for the duration of your stay plus 2 days in case of delays/cancellations in flights. It is a good idea to bring an up-to-date list of all your medicines in case you lose them. Keep the list separate from your medicines and make sure that it contains both the generic(scientific) name and brand name of each medicine, as the brand name may vary between countries.
There have recently been lots of changes in security arrangements at airports. As a result, you may be asked to put your medicine in luggage in the hold if you can. Obviously, if you need medicine between checking in and collecting your luggage at the other end, this won't be possible. If you do need your medicine during the trip, it's worth checking with the airline before you fly to find out their policy. You should take a little extra in your hand luggage in case your luggage is lost or delayed.
Whilst on holiday you may well be out of your normal daily routine so it is possible that you may miss a dose of your medicine. You should not worry unduly about this but try and get back onto your treatment regime as soon as possible. DO NOT take a double dose of any medicine to make up for a missed dose as this could potentially be more harmful than missing a dose. When travelling over several time zones it is recommended that you take your medicines after arrival at the local time.