I realise my 1st Aid Kit is perhaps a bit over the top, but having travelled in a few 3rd world countries with 2 teenage sons, my doctor and I felt it would be better to be fairly well prepared, so here goes:
Quite a few 'anti' meds..
Anti inflamatory tabs and sometimes cream
Broad spectrum anti biotic - not always advisable, I know, but sitting in the middle of nowhere, it helps sometimes
Anti histamine tabs and cream - good for allergies and bites
Paracetamol or pain killers/ something for fever
Rehydration sachets - have needed them on two occasions (heat stroke & with diarhoea) and are well worth it when in a country with temperatures between 40 - 50 degrees C
Something for tummy upsets - such as Kantrexil
Motion sickness tabs
Malaria prophylaxis if in malaria area & insect repellant
Useful to have: spray on plaster - like a plastic coating
Something for burn wounds - we often cook with open fires
Various sizes of other plasters or a roll of micropore, gauze, antiseptic cream
On one occassion we have even taken our own needles (sealed in their package) in case we needed some injections and we were not too sure if we would be given new and sterilised needles - sounds daft, but it does happen where medical facilities aren't the greatest!
Antiseptic hand spray, sun screen and believe it or not, all this doesn't take up much more space than a large purse!