First therapeutic LSD study in 35 years wraps in Switzerland

Psychiatrists in Switzerland have nearly completed their study of LSD-assisted psychotherapy in the treatment of anxiety associated with life threatening illnesses.

The study is the first of its kind to be undertaken in 35 years. Although most people associate the psychedelic drug LSD with the hippie counterculture of the 1960's, psychiatrists had been studying the use of LSD as an aid to psychological therapy before it was federally banned in the United States in 1968.

Peter Gasser, M.D., a psychiatrist and lead investigator of the study, said to friends and colleagues that "all the 12 participants reported a benefit from the treatment." The study was begun in 2007 after being approved by Swiss legal authorities and the final LSD-assisted psychotherapy session was completed on May 26.

"I am proud to say that we had in 30 sessions (22 with full dose 200 micrograms LSD and 8 with placebo dose 20 micrograms LSD) no severe side effects such as psychotic experiences or suicidal crisis or flashbacks or severe anxieties (bad trips)," Gasser wrote in his letter. "That means that we can show that LSD treatment can be safe when it is done in a carefully controlled clinical setting."

[Thanks MAPS and Mason!]