Hofmann was aided in the discovery process by his willingness to ingest mushroom extracts to help verify the presence of the active compounds .
Hofmann , who had in 1938 created LSD , led a research group that isolated and identified the psychoactive compounds from Psilocybe mexicana .
Hofmann was aided in the discovery process by Hofmann 's willingness to ingest mushroom extracts to help verify the presence of the active compounds .
Hofmann , who had in 1938 created LSD , led a research group that isolated and identified the psychoactive compounds from Psilocybe mexicana .