Using Vicodin (hydrocodone) for emergencies (first-aid kit)?

absolutely NOT - you could kill someone if they react badly to it, not to mention the fact that technically you are trafficking, course there's the shelf life of the drug and the effect of temperature changes and moisture content on the drug itself...we have a natural "pain killer" that our body produces - it's called adrenalin that will get us through, like it or not - don't cause potential problems but introducing someone to a highly addictive drug when it's not necessary