Prevalence and associations of challenging, difficult or distressing experiences using classic psychedelics (Simonsson, et al, 2023)

•Study on the prevalence and associations of challenging, difficult, or distressing classic psychedelic experiences.
•Self-reported co-use of certain medications (e.g., lithium) was associated with degree of difficulty and risk of harm.
•Various set and setting variables (e.g., no psychological support) were associated with degree of difficulty and risk of harm.