has Adderall been shown to enhance performance or is this a preventative measure to protect player health?
what else do they check for? caffeine is probably helpful and not banned. LSD (microdosing)? Galantamine? If there are nootropics that can legitimately enhance high level chess play why aren't we using them on our top scientists and engineers?
Probably not Xanzolam, because there's no way it'd enhance your performance, but yeah, you get the idea.