Dennis Drabelle opens his review of Aldous Huxley: An English Intellectual with the story of Huxley’s death:
Aldous Huxley died while tripping on acid. On Nov. 22, 1963 (the day President Kennedy was assassinated), mortally ill with cancer, unable to speak, he wrote out a request for an injection of LSD, a drug he had taken several times before. His doctor consented. Huxley’s second wife administered the injection and, two hours later, a second one. In keeping with the principles of The Tibetan Book of the Dead, she encouraged him to let go. When it was time, he did.