Trial reportNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2023
Acute effects of MDMA and LSD co-administration in a double-blind placebo-controlled study in healthy participants.
Trial report in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 3 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
25 citing papers in PubMed, 3 syntheses or guidelines pooled it, 35 citations in OpenAlex.
- Effects of psychoplastogens on blood levels of brain-derived neurotrophic factor (BDNF) in humans: a systematic review and meta-analysis.Molecular psychiatry · 2025Pooled it
- Clinical Pharmacokinetics of Psilocin After Psilocybin Administration: A Systematic Review and Post-Hoc Analysis.Clinical pharmacokinetics · 2025Pooled it
- Drug-drug interactions involving classic psychedelics: A systematic review.Journal of psychopharmacology (Oxford, England) · 2024Pooled it
- Acute and post-acute neurobehavioral responses to lysergic acid diethylamide in healthy subjects: a randomized controlled study.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026Trial
- Acute dose-dependent effects of 4-bromo-2,5-dimethoxyphenethylamine (2C-B) compared with 3,4-methylenedioxymethamphetamine (MDMA) and psilocybin in a double-blind, placebo-controlled study in healthy participants.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026Trial
- The 3D-ASCr scale: A revalidation of the core dimensions of the Altered States of Consciousness Rating Scale 5D(11)-ASC for psychedelic research.Journal of psychopharmacology (Oxford, England) · 2026Trial
- Safety and tolerability of multiple sublingual microdoses of 5-MeO-DMT in adults with moderate symptoms of depression and/or anxiety: a randomized, double-blind, placebo-controlled study.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025Trial
- Absolute Oral Bioavailability and Bioequivalence of LSD Base and Tartrate in a Double-Blind, Placebo-Controlled, Crossover Study.Clinical pharmacology and therapeutics · 2025Trial
- Motivation and retrospective appraisal of psychedelic study participation: a qualitative study in healthy volunteers.Psychopharmacology · 2025Trial
- Acute Effects and Pharmacokinetics of LSD after Paroxetine or Placebo Pre-Administration in a Randomized, Double-Blind, Cross-Over Phase I Trial.Clinical pharmacology and therapeutics · 2025Trial
- Acute effects of R-MDMA, S-MDMA, and racemic MDMA in a randomized double-blind cross-over trial in healthy participants.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2024Trial
- Oxytocin and the Role of Fluid Restriction in MDMA-Induced Hyponatremia: A Secondary Analysis of 4 Randomized Clinical Trials.JAMA network open · 2024Trial
- Naturalistic psychedelic therapy: The role of relaxation and subjective drug effects in antidepressant response.Journal of psychopharmacology (Oxford, England) · 2024Trial
- Pharmacological and non-pharmacological predictors of the LSD experience in healthy participants.Translational psychiatry · 2024Trial
- Clinical Characteristics of Emergency Visits Related to Recreational Psychedelic Use.Community mental health journal · 2026Article
- Review
- Subjective and neurocognitive profiling of clinical doses of 3,4-methylenedioxymethamphetamine (MDMA) in healthy volunteers: implications for therapeutic use.Molecular psychiatry · 2026Review
- Psychedelic therapy and postpartum depression: priorities and prospects.Therapeutic advances in psychopharmacology · 2026Review
- Methylenedioxymethamphetamine is a connectogen with empathogenic, entactogenic, and still further connective properties: It is time to reconcile "the great entactogen-empathogen debate".Journal of psychopharmacology (Oxford, England) · 2024Review
- Effects of congeners of amphetamine on the human heart.Naunyn-Schmiedeberg's archives of pharmacology · 2024Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
There is renewed interest in the use of lysergic acid diethylamide (LSD) in psychiatric research and practice. Although acute subjective effects of LSD are mostly positive, negative subjective effects, including anxiety, may occur. The induction of overall positive acute subjective effects is desired in psychedelic-assisted therapy because positive acute experiences are associated with greater therapeutic long-term benefits. 3,4-Methylenedioxymethamphetamine (MDMA) produces marked positive subjective effects and is used recreationally with LSD, known as "candyflipping." The present study investigated whether the co-administration of MDMA can be used to augment acute subjective effects of LSD. We used a double-blind, randomized, placebo-controlled, crossover design with 24 healthy subjects (12 women, 12 men) to compare the co-administration of MDMA (100 mg) and LSD (100 µg) with MDMA and LSD administration alone and placebo. Outcome measures included subjective, autonomic, and endocrine effects and pharmacokinetics. MDMA co-administration with LSD did not change the quality of acute subjective effects compared with LSD alone. However, acute subjective effects lasted longer after LSD + MDMA co-administration compared with LSD and MDMA alone, consistent with higher plasma concentrations of LSD (C
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.