Thanks to Sean & Hanni (ITAH & UTR), Lee (Hardcopy), Simon (Underground Datafile) and Jevgenij (What’s that Noise?!)
"One of the most common recurrent reactions to LSD use is a
psychotic breakdown of an extended but unknown duration. What
this means, of course, is that many abusers become insane in
a few short hours under the influence of the drug."
U.S. CONGRESSIONAL HEARINGS, May 1966