If you're unprepared, you can end up in ER for both of them.

whats ER ? I did LSD twice, first time was a 100 ug dose, it was pleasant experience. 10 days later i did a 250 ug dose. first 2 hours was the best hallucinations of my life :), then there was an electricity shortage for a few minutes where i live, that darkness scared the hell out of me i panicked and had a strong shortness of breath. needless to say it was a shocking experience. had random panic attacks that persisted for 2 month. LSD is very powerful and surly is no joke.

ER - emergency room. It's, of course, a misnomer, it's not just one room. ER is common in the US, outside of the US it's also called emergency department (ED), accident & emergency department (A&E), emergency ward (EW)