English Doctor Makes First Medical Documentation of the Effects of Psychedelic Mushrooms

Dr. Everard Brande of London, England is the first to document the effects of psychedelic mushrooms on humans in a medical journal.

October 3, 1799

This is the first documented experience of the effects of ingesting psychedelic mushrooms recorded in a medical journal. In a letter to the London Medical and Physical Journal in 1799, Dr. Everard Brande describes attending to a family who was acting strangely, laughing, and having visions after eating a stew they made with mushrooms picked in London’s Green Park. Upon examination, the mushrooms were found to be Agaricus glutinosus and later reclassified as Psilocybe semilanceata, aka Liberty Caps.