LSD — try it intermuscular — 100 mm —
Laura conferred with Huxley's doctor and then gave her husband the injection. About two hours later she administered another one. Huxley was silent, awake and appeared to be relieved and peaceful for the next few hours. He died just after 5:00 PM.
— Scott Slater & Alec Solomita, EXITS: Stories of Dying Moments & Parting Words (EP Dutton, 1980)