I know of a bad story with this, i am in the uk.
A fairly together guy i know took acid for the first time in his life, realised oneness, love , blah blah all the profound stuff for the first time, he was blown away.
in the evening he took a whole gram of coke. the next day he walked down the street agressively preaching to people about how they must love, they must see oneness, like he was the absolute athority, he was shouting at people and being coke head agressive, he then went into a stationary store and accused the people of selling biro pens so that people could snort coke, he pushed over all the stands that held pens freaking out about the evils of coke. he then walked down a busy street preaching the evil of coke, whilst really out of it.
the police came and got him and he got sectioned for 2 months after it , i went to visit him and he was really out of it. He was speaking giberish in a mental room with real loons, it was really upsetting as he was a really good sportsman, rugby player and you wouldnt think it would happen to him. the combination of a freshman tripper in this case was bad.
He did calm down and resume normal life, i did see him years later and he was in clubs taking 'e's and i could see the paranoia in his mind that he could end up there again but that was his choice.