Effect: Increased Concentration
From the Fallout series; Jet in it's different forms, Ultrajet and Rocket, are delivered by reused inhaler harnessing the power of Brahmin droppings.
Created by a twisted Fallout NPC who was looking for a way to use all the crap produced by his two-headed cows. Side effects are heart attacks, cerebral hemorrhages, and psychotic episodes. But, it would make getting you out of bed in the morning much, easier.