Psychopharmacology
May 28, 2026
Mazen A Atiq, Eli Weisman, Rodrigo B Guerra et al.
Psilocybin is among the serotonergic psychedelics closest to potential FDA approval, with growing evidence of therapeutic benefit across psychiatric conditions. As clinical trials expand, systematic characterization of adverse events (AEs) remains essential. While transient hypertensive responses are well documented, hypotensive events such as neurocardiogenic syncope (NCS) are rarely reported....
Journal of psychopharmacology (Oxford, England)
May 2, 2026
Zarmeen Zahid, Rick J. Strassman, Clifford Qualls et al.
Serotonergic psychedelics are being investigated in the treatment of various disorders and in the improvement of well-being. Evidence suggests that their subjective effects may play a role in long-term behavioral outcomes. The subjective effects are mediated by 5-HT2A receptor agonism, but the 5-HT1A receptor may also play a role in the subjective effects. This study elucidates the effects of...
Nature Mental Health
May 1, 2026
S. Parker Singleton, Brooke L. Sevchik, Analiese Lahey et al.
2 citations
This study presents a living systematic review and open-data meta-analytic database from 15 randomized controlled trials examining the effects of psilocybin treatment on depressive symptoms. Existing evidence suggests that psilocybin treatment alleviates depressive symptoms. Depression is a major cause of disability worldwide, motivating interest in psilocybin as a potential treatment. Here we...
medRxiv Preprint Server
April 28, 2026
Sandeep M. Nayak, Nathan D. Sepeda, Matthew Nielsen Dick et al.
preprint
Background Psilocybin has increasingly been studied as a therapeutic for psychiatric and neurologic conditions, yet comprehensive cardiovascular safety data are limited. Current trials often exclude individuals with blood pressure ≥140/90 mmHg, criteria established conservatively without robust empirical support.
April 23, 2026
Eli Stark-Elster, Mamosebetsi Sethathi, Breyten Van der Merwe et al.
Reliable documentation of the traditional use of serotonergic psychedelics has long been confined to the Americas. Prevailing narratives often overstate the global prevalence and uniformity of traditional psychedelic use, extrapolating from a limited set of well-documented cases. Here, we report evidence of psilocybin mushroom use among Basotho traditional healers and non-healers in Lesotho and...
medRxiv Preprint Server
March 27, 2026
Brooke L. Sevchik, S. Parker Singleton, Analiese Lahey et al.
preprint
3,4-methylenedioxymethamphetamine (MDMA) has emerged as a potential treatment for post-traumatic stress disorder (PTSD), generating considerable enthusiasm in the field. However, rapidly changing evidence in a fast-moving field can be challenging to integrate. Here, we present a living systematic review and open-data meta-analytic resource on MDMA treatment for PTSD. In this initial release,...
BMJ
February 23, 2026
Edward Jacobs, Zarmeen Zahid, Jared T. Hinkle et al.
5 citations
Over the past 15 years, psychedelic treatments have garnered substantial clinical interest, with psilocybin and 3,4-methylenedioxymethamphetamine (MDMA) advancing to phase 3 trials for various psychiatric conditions. This state-of-the-art review examines the evidence for these treatments and their proposed mechanisms of action, and identifies key challenges in clinical translation. Psychedelic...
Psychiatry Research
February 13, 2026
Sean P. Goldy, Nathan D. Sepeda, Samantha Hilbert et al.
1 citation
Psychedelics' characteristic acute subjective effects predict therapeutic benefits, such as decreases in depression and anxiety. Thus, optimizing treatment involves better understanding which factors shape subjective effects. Session facilitators, who support participants before, during, and after psychedelic administration sessions, form an important part of the setting of these experiences....
Journal of psychopharmacology (Oxford, England)
2026
Jack E Henningfield, Frederick S. Barrett, Suzette M Evans et al.
This review provides an overview of Roland R. Griffiths' history of research, and his mentoring and collaborating approach to science that contributed to his impact in behavioral and neuropsychopharmacology and psychedelic medicines development. The approach was to summarize studies in his major domains of research, including preclinical and clinical abuse liability assessment science, alcohol,...
General Hospital Psychiatry
2026
Jonathan R Schettino, Katherine Cheung, Sandeep M. Nayak et al.
Classic psychedelic studies involve interpersonal interactions with participants before, during, and after the acute effects of psychedelics. In the field of psychedelic research, there is currently a debate about whether this interpersonal interaction is most accurately considered "psychological support," "psychotherapy," or something else. Proponents of the psychological support label...
medRxiv Preprint Server
December 5, 2025
Gabriel Loewinger, Mats J. Stensrud, Sandeep M. Nayak et al.
preprint
In clinical trials for mental health treatments, functional unmasking (unblinding) is a widespread challenge wherein participants become aware of their assigned treatment. Unmasking is especially concerning with psychedelics, due to the near unmistakable acute effects (the “trip”), resulting in uncertainty about whether outcomes following treatment reflect true therapeutic properties of the...
Psychopharmacology
October 27, 2025
David A Bender, Sandeep M. Nayak, Joshua S. Siegel et al.
Psychedelic treatments are considered to involve unique treatment challenges relative to other psychiatric interventions, though these are typically not explored in detail within clinical trial reports. To determine the types of challenges that providers encounter while administering psychedelic drugs in research settings and to assess provider opinions on safeguards that may be pursued to...
Journal of Psychopharmacology
September 1, 2025
Sandeep M. Nayak, Zarmeen Zahid
5 citations
As psychedelic clinical trials expand in scale and influence, foundational challenges in trial design have come into sharper focus. In this commentary, we examine three interrelated issues: 1) the failure of blinding in psychedelic trials, 2) the potential of alternate controls including dose-response designs as an empirical workaround, and 3) the persistent ambiguity surrounding psychosocial...
medRxiv
August 16, 2025
S. Parker Singleton, Brooke L. Sevchik, Analiese Lahey et al.
preprint
Abstract Importance Depression is a major cause of disability worldwide, motivating substantial interest in psilocybin as a potential treatment. Objective To conduct a systematic review and meta-analysis of psilocybin’s impact on depressive symptoms and provide a living open data resource. Data Sources PubMed, Embase, Scopus, Web of Science, and PsycINFO retrieved by a systematic search up to...
American Journal of Psychotherapy
May 6, 2025
David A Bender, Sandeep M. Nayak, Joshua S. Siegel et al.
7 citations
Psychedelic therapies are promising new treatment options in psychiatry. Including the use of physical touch as part of treatment is an area of debate. This study aimed to characterize the viewpoints of practitioners on the use of touch in psychedelic therapy. An anonymous survey was distributed via e-mail to the contacts listed on ClinicalTrials.gov for trials of psilocybin and lysergic acid...
Journal of psychopharmacology (Oxford, England)
May 1, 2025
Sean P. Goldy, Benjamin A Du, Julia S Rohde et al.
15 citations
As classic psychedelics' therapeutic potential is studied and their popularity continues to rise, it is important to establish their relative risks and benefits. Previous surveys have tended to use convenience sampling on social media, select participants who have had either extremely positive or negative effects, and have not compared the risk/benefit profile of psychedelics to other...
Psychedelic medicine (New Rochelle, N.Y.)
March 1, 2025
Rebecca Ehrenkranz, Manish Agrawal, Sandeep M. Nayak et al.
7 citations
Research has demonstrated both risks and benefits to using psychedelics as a therapeutic intervention for a variety of mental health conditions. In recent years, the public discourse around psychedelic treatments has been largely positive and focused on benefits more than risks. We believe the field would benefit from more balanced attention to the risks as well as benefits of psychedelics...
Journal of Psychoactive Drugs
February 7, 2025
Amy Lehrner, Heather Jackson, David S. Mathai et al.
11 citations
The classic psychedelic psilocybin has attracted special interest across clinical and non-clinical settings as a potential tool for mental health. Despite increasing attention to challenging psychedelic experiences, few studies have explored the relevance of shame-related processes with psychedelic use. This prospective, longitudinal study involved sequential, automated, web-based surveys that...
The Journal of Clinical Psychiatry
February 5, 2025
David A Bender, Sandeep M. Nayak, Joshua S. Siegel et al.
3 citations
Objective: To assess the viewpoints of psychedelic practitioners in research settings on approaches to psychological support for psychedelic treatments. Methods: An anonymous survey was distributed via email to contacts listed on ClinicalTrials.gov for clinical trials of psilocybin and LSD, personal contacts of authors, and through snowball sampling. The survey included Likert type, multiple...
Journal of Affective Disorders
February 1, 2025
Grant Jones, Matthew X. Lowe, Sandeep M. Nayak et al.
12 citations
Psilocybin (a psychoactive compound found in "magic mushrooms" or "shrooms") has been gaining increased attention in research and popular culture as a number of clinical and observational studies have demonstrated that it may have potential for improving mental wellbeing. Relatedly, there has been a substantial uptick in naturalistic (e.g., real-world, non-clinical) psilocybin use in the United...
Psychedelic Medicine
January 20, 2025
Marianna Graziosi, Gabrielle Agin-Liebes, Mary P Cosimano et al.
9 citations
Introduction: Serotonergic psychedelics, serotonin 2A receptor agonists such as psilocybin that can result in substantially altered states of consciousness, are used in recreational and research settings. The safety of psychedelic experiences in research settings is supported by controlled physical environments, presence of clinical and medical staff to address emergent issues, screening for...
Psychopharmacology
2025
Brian S. Barnett, M Frances Vest, Marcus S Delatte et al.
20 citations
There is increasing interest in establishing psychedelic research programs at academic medical centers. However, psychedelics are intensely psychoactive, carry considerable sociopolitical baggage, and most are Schedule I drugs, creating significant potential impediments to implementation. There is little formal guidance for investigators on navigating the complex on-the-ground obstacles...
Scientific Reports
November 14, 2024
Erin Wang, David S. Mathai, Natalie Gukasyan et al.
18 citations
Psychedelic-assisted therapy (PAT) with substances like psilocybin and MDMA has shown promise for conditions including depression and post-traumatic stress disorder. Psilocybin and MDMA may become approved medicines in the coming decade. This study assessed knowledge and attitudes regarding PAT among 879 U.S. healthcare professionals via anonymous online survey. Multivariable linear regression...
Research Square
October 15, 2024
Alexandra R. Gordon, Brennan M. Carrithers, Broc A. Pagni et al.
3 citations
Abstract Background: Personality disorders (PDs) are characterized by impairments in psychological functioning for which pharmacologic treatments have demonstrated limited efficacy. Psychedelics may offer a possible PD treatment, given preliminary evidence for their potential long-term positive effects on psychological functioning. However, little is known about safety or potential therapeutic...
Philosophical Perspectives on Psychedelic Psychiatry
September 13, 2024
David B. Yaden, Sandeep M. Nayak, Roland R. Griffiths
4 citations
Abstract The proportion of people who change their metaphysical beliefs after psychedelic experiences is not yet known with specificity. However, it appears that belief changes can occur in some cases, and evidence more precisely estimating the prevalence and magnitude of such belief changes is accruing. The evidence for metaphysical belief changes is reviewed and the potential psychological...