LSD went on to be an iconic psychedelic drug popularized by Timothy Leary and others as part of the 1960s counterculture movement. LSD is a synthetic psychedelic compound, unlike naturally-occurring psychedelic compounds like psilocybin and psilocin.
It was the twenty-fifth derivative he synthesized from the ergot fungus, hence its more proper name, LSD-25. LSD is the most potent psychedelic agent in humans. It belongs to the ergoline family of psychedelic compounds, also called rigidified tryptamines.
