UW Psilocybin Pharmacokinetics Study

Psilocybin is a naturally occurring psychedelic compound produced by more than 200 species of mushrooms, collectively known as psilocybin mushrooms. Psilocybin (4-phosphoroyloxy-N,N-dimethyltryptamine) is a hallucinogenic tryptamine that was first isolated from Psilocybe mushrooms in 1957.

The objective of this Phase I clinical trial is to determine the pharmacokinetics of oral doses of psilocybin in normal, healthy adults.

The study is performed in support of Phase II and Phase III studies of psilocybin for the treatment of refractory anxiety associated with incurable cancer, as well as other possible indications.

Psilocybin is at present not an FDA-approved drug.

Trial Details



Trial Number

Sponsors & Collaborators

University of Wisconsin-Madison
The Transdisciplinary Center for Research in Psychoactive Substances (TCRPS) was launched at the University of Wisconsin-Madison in 2021.

Heffter Research Institute
The Heffter Research Institute has been advancing psychedelics (psilocybin) as medicines since 1993.

Data attribution

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