Ergot to LSD | Discovery| Chemical Structure | How It Works | LSD’s Affect on History | History’s Affect on LSD
Because of their similar shape, it is not difficult to see how LSD could bind to serotonin receptors in the brain.
Serotonin LSD 
Biological Effects:
-Stimulates sympathetic nervous system
-Dialation of Pupils
-Increased body temperature
-Rise in blood- sugar levels