A first aid box should have sterile cotton roll, antiseptic solution, roller bandage, Neosporin antiseptic cream for wounds, paracetamol tablets for fever, aceclofenac tablets as pain killer, for loose motions tablet eldopar and/or ciplox TZ(in case it is a infectious diarrhea/dysentery), tablet montek lc which will serve as both anti allergic and anti cold tablet, pantoprazole/domperidone as a antacid/antivomiting combination.
Next Steps
make sure you take regular medications that you are on in sufficient quantity depending on the duration of your travel.
Health Tips
Beware of medicines that you are allergic to and avoid their consumption. people prone to anaphylactic shock/serious allergies should carry Epi-pen and should be used subcutaneous as directed by their physician. Asthmatics should carry their inhaler.
Wear a tag of any childhood medical conditions you are suffering with while you are travelling.
Always visit a physician before you are travelling to places with extreme weather or physical conditions