Of unknown derivation, Hyperdrene is generally considered to be an hallucinogen, as the imps and pixies one sees under its influence are presumably hallucinations.
However, these hallucinations can be seen by other people too, although only during the 4-5 hours that the drug’s effects last, which begs the question of whether or not they are real.
It is possible that Hyperdrene is not an hallucinogen at all, but rather a drug that creates a briefly existing super-position between this dimension and the adjacent one more usually inhabited by the pixies. Attempts to question the pixies about this have been fruitless, as their only form of communication appears to be reciting nonsensical couplets.
Related drugs: Darkshots, Mongoose Blood and Xenite