I read champignons and it kind of fit even better. Adderall (Brave New World) and mushrooms (Island).
replies(2):
Marijuana often seems to promote thinking "outside the box" which is probably not what the Brave New World people would want for their population
Hard disagree. Cannabis induces a sensation of profundity. It makes ordinary mundane thoughts feel insightful and novel. The ideas you have when on cannabis seem like insightful out of the box ideas, but that's a perceptual illusion created by the drug. The best it can do is provide you the encouragement to see ideas through to the end, but of course this is tempered by the way it generally has a negative effect on motivation, so most often users are left thinking of ideas they think are wonderful, but not actually executing on those ideas. End result is usually a couch potato lost in unproductive thoughts.