That he learned his lesson.
People have similar reactions to alcohol; to prescription meds, to a variety of substances. Yet we manage to survive hand in hand with them.
And, of course, you are being a bit overdramatic, selling brownies at the 7/11.
Oh my goodness.
I am not aware of anyone becoming psychotic after drinking too many beers.
Delusions, paranoia, anxiety - these are lasting affects after the buzz goes away.