“At the time of his death, Crowley was taking heroin for asthma. It was a common medical practice at the time for doctors to prescribe heroin for asthma. He became addicted like anyone would. He later used heroin recreationally and sacramentally, as he did with many drugs including cocaine, hashish, ether, peyote, and pretty much anything else he could get his hand on to try. He was after all a scientist (he even trained as a chemist), a mystic, and a psychonaut. He, like Terrence McKenna, did utilize various drugs to explore consciousness.” HeroinAsthmaAleister CrowleySacramentalPsychonautTerrence MckennaConsciousness Exploration Book:666: Connection with Crowley Source: 666: Connection with Crowley