There has been a resurgence of interest in the use of psilocybin, the active psychedelic compound found in several species of “magic mushrooms”, due to accumulating data supporting its use in many conditions including depression, anxiety, substance use disorders, and PTSD. It has particularly robust data for use in people with advanced and terminal illness. What is psilocybin? Psilocybin is the active ingredient in several species of “magic mushrooms” including Psilocybe cub