Unknown-dose "LSD" in the worst possible set/setting?
Do you really need a warning?
It might not have been proper LSD in the first place. There is synthetic LSA on the market, which gives LSD-type effects for 20-hours instead of the 8-hours of LSD, which has dramatically worse effects on both dopamine and dorepinephrine because of the long stimulation. The result is very bad trips with serious anxiety and paranoia.
Do you really need a warning?
It might not have been proper LSD in the first place. There is synthetic LSA on the market, which gives LSD-type effects for 20-hours instead of the 8-hours of LSD, which has dramatically worse effects on both dopamine and dorepinephrine because of the long stimulation. The result is very bad trips with serious anxiety and paranoia.