Utterly Mad

Evil corporations and weaponized animal poisons are both things IRL, and should be in the UMEU as well. I'll throw approval at this.

From what I'm getting from the snake oil, it's intended more to incapacitate than kill, but is there some kind of antidote for it? If so, how quickly does it need to  be administered to work?

I'd say there're some herbs and salves native to Multhok that'd do some good, but they're not exactly in widespread circulation or anything. At best, you'd find a good few containers in the medical centers of working worlds that use the venom as a protest-deterrent. Maybe one or two in the hands of interrogators, just in case their charge almost dies.