So a good friend of mine got LSD induced psychosis. It wasn't permanent but for about a month he was exhibiting symptoms and he was totally off the deep end for about a week or so. Friends had to bring him to the hospital days later and they kept him in the psych ward for a while.

It was incredibly scary that it lasted so long and I was so worried he'd never be the same again.

It's disturbing that you have no knowledge of a very real side effect of these drugs.

https://en.wikipedia.org/wiki/Psychotic_break

> Several types of psychoactive drugs have been shown to correlate with psychotic breaks

It is common knowledge amongst psychiatrists and psychologists, and has been for decades. For most people, no problem. For some people, big problem. Most people that have a psychotic break never fully recover from it either.