Looking for Toxin X () is a Czechoslovak short popular science documentary about LSD.
A dose of LSD is given to a DAMU theatre student, Petr Oliva, by the Czech psychiatrist Stanislav Grof. Special effects convey the subjective experience of the experimental subject. The film's central premise is the search for âÂÂtoxin xâÂÂ, which is supposed to be at the root of all mental disorders. The medics believe that LSD will help them locate it.
The whole film crew were also given LSD during filming. The experimental subject Oliva (who went on to become a prominent Czech actor) later recalled that the reason everyone was given the drug was because, âÂÂwe had to see for ourselves what happens to a person [when they are given the drug].âÂÂ
Excerpts from the film appear in the documentary LSD made in ÃÂSSR (2015) directed by Pavel Kà Âemen.âÂÂ