My sisters bloke spent ten years in Spec-Ops (UK). During the Gulf War he was given a cocktail of around ten different pills, never tested in that combination before to be taken every day, he buried his in the Saudi desert along with many others. The pills wouldn\'t have saved them from everything, they said they\'d rather die than have to survive a gas attack in total agony and pull through.
One of his squad members didn\'t bury his pills, two years after the gulf he saw this guy again and he had a patch of grey on his cheek about 1" across and spreading slowly. He went to the doctor and was told that for some reason his skin was dying and there was nothing they could do to stop it other than remove the entire section of his face.