Food Poisoning, Gastritis, Diarhea, sunburn, bug bites, splinters, chapped skin, dermatitis, athlete's foot, jock itch, ringworm, hayfever, eye irritations, respiratory inflammation are all things I've experienced more than once on my travels. Thank God I haven't encountered anything worse, like lice.

Here's my list of must haves, from Baghdad to Brisbane and points in between:

Immodium
Pepto Bismol
Benadryl
Aspirin
Ibuprofren
Simethicone
Visine AC or Allergy Relief
Nizoral
SPF 30 sunscreen
Campho-Phenique
Mucinex