Zydrate is a fictional drug. In the movie Repo! The Genetic Opera, Zydrate -a potent opioid extracted from dead bodies- is manufactured by GeneCo. as a prescription painkiller. Zydrate is injected with a Zydrate-Gun which uses an electric current to enhance the drug's analgesic effect.
Graverobber: Zydrate comes in a little glass vile.
Shilo: A little glass vile?
Junkies: A little glass vile!
Graverobber: And the little glass vile goes into the gun like a battery... And the Zydrate-Gun goes somewhere against your anatomy... And when the gun goes off it sparks and you're ready for surgery.