The Finnish soldier who took his entire troop's meth supply
iflscience.com
iflscience.com
A special vehicle based South African unit called Koevoet(crowbar) was unable to capture an infiltrator who was on foot over hundreds of kilometres and a number of days.
The infiltrator discarded hypodermics, used for injecting meth, along the way.
It is an amazing chemical compound, but one with horrific negative consequences, even when carefully prescribed.