A First-in-Man Study with 4-Fluoroamphetamine Demonstrates it Produces a Mild Psychedelic State

The phenethylamine 4-fluoroamphetamine (4-FA) is a so-called novel psychoactive substance with a chemical structure resembling that of amphetamine and MDMA. Since 4-FA users report their subjective experience ranges between the effects induced by amphetamine and MDMA, and it is known that both substances can produce an altered state of consciousness, this study tests whether 4-FA induces a psychedelic state. A placebo-controlled two-way...