Among items you might want to carry with you - especially if you're planning to go trekking - are: Antiseptic cream Insect repellent Plasters/band aids Water sterilization tablets or water purifier Lint and sealed bandages Knee supports A course of Flagyl antibiotics Imodium (Lomotil) for emergency diarrhoea treatment Paracetamol/aspirin (useful for combating the effects of altitude) Multi-vitamin and mineral tablets Rehydration sachets Hypodermic needles and sterilized skin wipe