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Abstract Title:

Psilocybin-assisted treatment for alcohol dependence: a proof-of-concept study.

Abstract Source:

J Psychopharmacol. 2015 Mar ;29(3):289-99. Epub 2015 Jan 13. PMID: 25586396

Abstract Author(s):

Michael P Bogenschutz, Alyssa A Forcehimes, Jessica A Pommy, Claire E Wilcox, P C R Barbosa, Rick J Strassman

Article Affiliation:

Michael P Bogenschutz

Abstract:

UNLABELLED: Several lines of evidence suggest that classic (5HT2A agonist) hallucinogens have clinically relevant effects in alcohol and drug addiction. Although recent studies have investigated the effects of psilocybin in various populations, there have been no studies on the efficacy of psilocybin for alcohol dependence. We conducted a single-group proof-of-concept study to quantify acute effects of psilocybin in alcohol-dependent participants and to provide preliminary outcome and safety data. Ten volunteers with DSM-IV alcohol dependence received orally administered psilocybin in one or two supervised sessions in addition to Motivational Enhancement Therapy and therapy sessions devoted to preparation for and debriefing from the psilocybin sessions. Participants' responses to psilocybin were qualitatively similar to those described in other populations. Abstinence did not increase significantly in the first 4 weeks of treatment (when participants had not yet received psilocybin), but increased significantly following psilocybin administration (p<0.05). Gains were largely maintained at follow-up to 36 weeks. The intensity of effects in the first psilocybin session (at week 4) strongly predicted change in drinking during weeks 5-8 (r = 0.76 to r = 0.89) and also predicted decreases in craving and increases in abstinence self-efficacy during week 5. There were no significant treatment-related adverse events. These preliminary findings provide a strong rationale for controlled trials with larger samples to investigate efficacy and mechanisms.

TRIAL REGISTRATION: NCT02061293.

Study Type : Human Study

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Sayer Ji
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