BMJ Open
May 11, 2026
Julia Colcott, Alexandre A. Guerin, Olivia Carter et al.
Despite growing interest in the therapeutic potential of 3,4-methylenedioxymethamphetamine (MDMA), no targeted measure to systematically assess side effects of MDMA-assisted psychotherapy (MDMA-AP) exists. Our aim was to develop an MDMA-Assisted Psychotherapy Side Effects Tool (M-SET) to capture side effects over the course of MDMA-AP. Informed by a systematic review and a review of other...
Psychopharmacology
March 4, 2026
Ava M. Mac, Srinivasu Kallakuri, Alixandria T. Mascarin et al.
MDMA (3–4 methylenedioxymethamphetamine) assisted psychotherapy has gained considerable attention as a potential adjuvant therapy for post-traumatic stress disorder (PTSD). Reports of the nonmedical use of MDMA suggest its adverse effects may include anxiety and anhedonia. However, the time course of these signs and symptoms and the potential alterations in neurotransmitter levels that may...
Therapeutic Advances in Psychopharmacology
September 1, 2025
Suresh Muthukumaraswamy, Matthew J. Baggott, Eduardo Ekman Schenberg et al.
8 citations
Psychedelic-assisted therapy (PAT) has typically been evaluated using conventional randomised controlled trials (RCTs), which assess treatment efficacy under highly controlled conditions. However, PAT constitutes a complex intervention, integrating pharmacological, psychotherapeutic and contextual elements that interact dynamically with patient experiences and healthcare settings. Conventional...
The Journal of pharmacology and experimental therapeutics
September 18, 2024
Candace B Johnson, Donna Walther, Matthew J. Baggott et al.
5 citations
3,4-Methylenedioxymethamphetamine (MDMA) has shown efficacy as a medication adjunct for treating post-traumatic stress disorder (PTSD). However, MDMA is also used in nonmedical contexts that pose risk for cardiovascular and neurologic complications. It is well established that MDMA exerts its effects by stimulating transporter-mediated release of the monoamines 5-hydroxytryptamine (5-HT),...
JAMA Network Open
June 3, 2024
Amy L. Mcguire, I Glenn Cohen, Dominic Sisti et al.
41 citations
As government agencies around the globe contemplate approval of the first psychedelic medicines, many questions remain about their ethical integration into mainstream medical practice. To identify key ethics and policy issues related to the eventual integration of psychedelic therapies into clinical practice. From June 9 to 12, 2023, 27 individuals representing the perspectives of clinicians,...
History of Pharmacy and Pharmaceuticals
October 1, 2023
Matthew J. Baggott
2 citations
Abstract In 1967, a synthetic psychedelic drug, nicknamed STP, escaped from the archives of Dow Chemical and flooded the Haight-Ashbury neighborhood of San Francisco. The resulting public health crisis can be seen as a case study in how new unsanctioned psychoactive substances become legible to society through the efforts of different actors. STP was interpreted by young hip doctors,...
Neuropsychopharmacology
January 24, 2020
Carla Agurto, Guillermo Cecchi, Raquel Norel et al.
33 citations
Abstract The detection of changes in mental states such as those caused by psychoactive drugs relies on clinical assessments that are inherently subjective. Automated speech analysis may represent a novel method to detect objective markers, which could help improve the characterization of these mental states. In this study, we employed computer-extracted speech features from multiple domains...
Journal of Psychoactive Drugs
March 15, 2019
Matthew J. Baggott, Kathleen J. Garrison, Jeremy Coyle et al.
20 citations
Entactogens such as 3,4-Methylenedioxymethamphetamine (MDMA, "molly", "ecstasy") appear to have unusual, potentially therapeutic, emotional effects. Understanding their mechanisms can benefit from clinical experiments with related drugs. Yet the first known drug with such properties, 3,4-Methylenedioxyamphetamine (MDA), remains poorly studied and its pharmacokinetics in humans are unknown. We...
Journal of Psychopharmacology
August 26, 2016
Anya K. Bershad, Melissa A. Miller, Matthew J. Baggott et al.
104 citations
±3,4-Methylenedioxymethamphetamine (MDMA) is a popular recreational drug that enhances sociability and feelings of closeness with others. These “prosocial” effects appear to motivate the recreational use of MDMA and may also form the basis of its potential as an adjunct to psychotherapy. However, the extent to which MDMA differs from prototypic stimulant drugs, such as dextroamphetamine,...
bioRxiv (Cold Spring Harbor Laboratory)
June 23, 2015
Matthew J. Baggott, Jeremy Coyle, Jennifer D. Siegrist et al.
21 citations
preprint
Abstract The drug 3,4-methylenedioxymethamphetamine (MDMA, “ecstasy”, “molly”) is a widely used illicit drug and experimental adjunct to psychotherapy. MDMA has unusual, poorly understood socioemotional effects, including feelings of interpersonal closeness and sociability. To better understand these effects, we conducted a within-subjects double-blind placebo controlled study of the effects of...
Journal of Psychopharmacology
April 29, 2015
Matthew J. Baggott, Matthew G. Kirkpatrick, Gillinder Bedi et al.
69 citations
Rationale: ±3,4-methylenedioxymethamphetamine (MDMA) is widely believed to increase sociability. The drug alters speech production and fluency, and may influence speech content. Here, we investigated the effect of MDMA on speech content, which may reveal how this drug affects social interactions. Method: Thirty-five healthy volunteers with prior MDMA experience completed this two-session,...
Psychopharmacology
March 15, 2014
M. Kirkpatrick, Matthew J. Baggott, John Mendelson et al.
78 citations
Several laboratories have conducted placebo-controlled drug challenge studies with 3,4-methylenedioxymethamphetamine (MDMA), providing a unique source of data to examine the reliability of the acute effects of the drug across subject samples and settings. We examined the subjective and physiological responses to the drug across three different laboratories and investigated the influence of...
arXiv Preprint Archive
June 1, 2012
Jeremy Coyle, David E. Presti, Matthew J. Baggott
Background: Psychedelic drugs facilitate profound changes in consciousness and have potential to provide insights into the nature of human mental processes and their relation to brain physiology. Yet published scientific literature reflects a very limited understanding of the effects of these drugs, especially for newer synthetic compounds. The number of clinical trials and range of drugs...
Psychopharmacology
April 1, 2011
John Mendelson, Jeremy Coyle, Juan Carlos Lopez et al.
40 citations
Salvinorin A (SA) is a highly selective kappa opioid receptor agonist and the putative psychoactive compound in Salvia divinorum (SD), an increasingly abused hallucinogenic plant. The objectives of this study were to characterize the physiological and subjective effects of SA versus placebo and measure drug and metabolite levels. Sublingual SA doses up to 4 mg were administered in dimethyl...
PLoS One
December 2, 2010
Gantt P. Galloway, Jennifer D. Siegrist, Lynn C. Robertson et al.
22 citations
BACKGROUND: The mechanisms of drug-induced visions are poorly understood. Very few serotonergic hallucinogens have been studied in humans in decades, despite widespread use of these drugs and potential relevance of their mechanisms to hallucinations occurring in psychiatric and neurological disorders. METHODOLOGY/PRINCIPAL FINDINGS: We investigated the mechanisms of hallucinogen-induced visions...
Drug and Alcohol Dependence
October 1, 2010
Matthew J. Baggott, Earth Erowid, Fire Erowid et al.
78 citations
There is growing use of Salvia divinorum (SD), a psychoactive plant that produces hallucinogen-like effects through a kappa opioid receptor (KOR) mechanism. Little is known about KOR agonist effects in humans and about users of SD. To characterize the reasons, methods, and reported consequences of SD use. Individuals reading SD-related pages of a drug-information website were invited to...
Annals of Internal Medicine
December 19, 2000
Steven J. Lester, Matthew J. Baggott, Susette Welm et al.
140 citations
BACKGROUND: The psychoactive stimulant 3, 4-methylenedioxymethamphetamine (MDMA), also known as "ecstasy," is widely used in nonmedical settings. Little is known about its cardiovascular effects. OBJECTIVE: To evaluate the acute cardiovascular effects of MDMA by using transthoracic two-dimensional and Doppler echocardiography. DESIGN: Four-session, ascending-dose, double-blind,...
Matthew J. Baggott
50 citations
After a 40-year hiatus, the question of whether psychedelics can increase creativity is being asked with renewed vigor. This article critically reviews the conceptual issues of studying psychedelic-induced creativity by summarizing the limited evidence on the question and suggesting two broader frameworks. There are two important challenges to researchers on this topic. One is to separate...
bioRxiv (Cold Spring Harbor Laboratory)
Matthew J. Baggott, Kathleen J. Garrison
1 citation
preprint
Abstract Hyponatremia is a serious complication of 3,4-methylenedioxymethamphetamine (MDMA) use. We investigated potential mechanisms in two double-blind, placebo-controlled studies. In study 1, healthy drug-experienced volunteers received MDMA or placebo alone and in combination with the alpha-1 adrenergic inverse agonist prazosin, used as a positive control to release antidiuretic hormone...