I think you've highlighted the one of the primary reasons that prohibition is harmful. If these substances were treated like medicine, studied, and understood t

I think you've highlighted the one of the primary reasons that prohibition is harmful. If these substances were treated like medicine, studied, and understood then we would all be much safer. Perhaps there is an actual scientific means of determining if someone has an "unstable psyche" before prescribing them the psychedelic (currently hard to discern because of restrictions on research of controlled substances). I'd imagine that if your doctor was thinking about this as a potential treatment for you then they'd want you to experience it there at the office, in the care of trained professionals, to gauge your reaction before sending you off into the unknown. Also, there are people who would die if they ate a PB&J. The difference is that, with regard to peanut allergies, we have data on how to test patients and how to protect them from exposure. With psychedelics it's either D.A.R.E or some guy on the internet - and the information provided by those sources is so contradictory that you're left rolling the dice. I'd predict that psychedelics are very safe for almost everyone without a severe pre-existing mental condition (this is my experience as a guy on the internet).