It is colourless, faceless, odourless - one of a whole family of hallucinogens both natural and synthetic - LSD (d-Lysergic acid diethylamide) is regarded by some as the most powerful of all. Also known as lysergide and colloquially as acid, is a semisynthetic psychedelic drug of the ergoline family, well known for its psychological effects. 1971 Concept Films Production for the Encyclopedia Britannica. Amazing recounts of the the history of acid complete with full on acid trips under doctor supervision.

Film Duration: 24 min