5-hydroxytryptamine (5-HT; serotonin) is a neurotransmitter. 5-HT is critical for essentially all human behaviours, and is particularly important in controlling mood and perception.1 Given this, it is not surprising that compounds which target the same structures in the brain, such as LSD, are often psychedelic hallucinogens.1 Cells that respond to 5-HT are stimulated when the neurotransmitter…
