adverse experiences including feelings of loneliness, nightmares, anxiety, uncontrollable worrying, panic, despair, hallucinations, disorientation, derealization, suicidality, psychotic disorder, manic symptoms, cardiovascular events, and hallucinogen persisting perception disorder have been documented. Adverse experiences such as anxiety and fear, existential struggle, social disconnection, depersonalization, and derealization can persist after psychedelic experiences,
sometimes for over a year 4)