a similar experiment happened with ayahuasca, written about by Jeremy Narby, author of The Cosmic Serpent: DNA and the Origins of Knowledge

OUTSIGHT was a bold plan to bring together and give mescaline and/or LSD to fifty to 100 of the world’s pre-eminent minds, including Einstein, Jung, A. J. Ayer, and Graham Greene. The intention was that “of changing the intellectual climate,” as lead instigator Osmond put it to fellow organiser, Huxley. The greater intention was that of changing Western civilisation, away from “the materialist way of life” to one where a transcendental dimension was registered, not by faith but by experience and experiment. –
Article link below.