From Warhammer 40k - Lexicanum
Necromunda. The drug lowers the taker's state of consciousness while inducing an elevated state of well-being. Unfortunately, the drug also makes the taker docile and compliant, which can be a dangerous condition in the Badzones of the underhive as the user can be led about willingly and will remain passive even if left alone.
Because of these effects, gangs will often use it for sedating captives, so that they can move them without fear of escape attempts.