would be a sedativum. The latin word today is used for any tranquilizer. To the best of my knowledge only the strongly calming medication is called as such within hospitals.
Despite shitty Google translate the word Sedativum or Seditivum derives from seductare, in English seduction and additive, in English adding.
Within all cults, and both the Nazis and also Confederate CIA derive from such cults, the word is meant in the very old original meaning and describes a medication in which today called lucid dreaming is performed, but to seduce. We can dream with others together.
The topic is exagerated in Hollywood movies, it is not the X files of the FBI, which do exist as a set of too strange too be true unsolved cases, which as a matter of fact, all happen to happen within the Sectarian religous scene of the USA. Those all come off avoiding our bonnfires in Europe hunting religious weirdos and some these days run their own Secret Service.
I wish I was joking here...instead I am about to turn the new Al Capo fighting the hardcore version of Prespytherians.