LSD does not cause your brain to bleed, drip or otherwise.
It does not stay in your body forever.
It does not cause chromosome damage.
It does not contain strychnine.
It is very very very hard to overdose on LSD.
It has a higher binding affinity to 5-HT receptors than serotonin itself and its mechanism of action, like that of many drugs is not well understood.
It is excreted from your body and a very short period of time.
http://www.sci-con.org/editorials/20030603.html