Drug class
Hallucinogens clinical trials
A class of medicines: the studies that test any of its 10 members, each study once. Members are as MeSH files each medicine’s actions, and as the NCI Thesaurus classes newer ones.
Keep track of what changes. Save the hallucinogens studies recruiting or about to start, and get an email each week — studies that open, close, add sites or post results.
Watch these studiesMedicines in this class
Studies that test each. A study of two counts under both, and once above.
- Psilocin
- 2
- Tenamfetamine
- 2
- Mescaline
- 1
Studies by the year they started
545 studies that test it; most in 2026 (83); 8 more planned to start later
| Year | Studies |
|---|---|
| 2001 | 3 |
| 2003 | 3 |
| 2004 | 4 |
| 2005 | 4 |
| 2006 | 8 |
| 2007 | 7 |
| 2008 | 7 |
| 2009 | 15 |
| 2010 | 8 |
| 2011 | 12 |
| 2012 | 11 |
| 2013 | 12 |
| 2014 | 15 |
| 2015 | 15 |
| 2016 | 3 |
| 2017 | 18 |
| 2018 | 19 |
| 2019 | 17 |
| 2020 | 17 |
| 2021 | 38 |
| 2022 | 41 |
| 2023 | 55 |
| 2024 | 56 |
| 2025 | 74 |
| 2026 | 83 |
By phase
A phase 1/2 study counts in both.
What it is tested for
Each study’s main condition, where its own words name it.
Who runs them
Industry 79 · Other 475
Yale University (41) · Johns Hopkins University (40) · University Hospital, Basel, Switzerland (37) · Lykos Therapeutics (24) · University of Chicago (19) · Centre for Addiction and Mental Health (9) · NYU Langone Health (9) · University of California, San Diego (8)
Studies
Open first, then newest update. How each study uses a medicine is read from its arms, and is right about nine times in ten.
Testing one of them · 554
- Psilocybin-Assisted Physical Therapy in Chronic Low Back PainNot yet recruitingPhase 2Yale UniversityNCT07306364Written as Psilocybin 10 mg
- Psilocybin-assisted Therapy for Comorbid Major Depressive Disorder and Alcohol Use DisorderRecruitingPhase 2Centre for Addiction and Mental HealthNCT07405606Written as Psilocybin 25 mg
- Neuroplasticity Enhancement From Cognitive Training Reinforced by PsilocybinRecruitingPhase 2National Institute on Aging (NIA)NCT07721467Written as Psilocybin
- Psilocybin Assisted Psychotherapy for Treatment Resistant Depression and Co-occurring Substance Use DisorderNot yet recruitingPhase 1/2Indiana UniversityNCT07499583Written as Psilocybin
- Redefine Study: A Study Evaluating the Efficacy, Safety, and Tolerability of COMP360 in Participants With Post-traumatic Stress DisorderRecruitingPhase 2/3COMPASS PathwaysNCT07570654Written as COMP360 psilocybin
- Psilocybin Intervention for Veterans Overcoming Treatment-Resistant DepressionRecruitingPhase 3VA Office of Research and DevelopmentNCT07226232Written as Psilocybin
- A Phase 3 Trial of DT120 for Major Depressive Disorder (Ascend)RecruitingPhase 3Definium Therapeutics US, Inc.NCT07592689Written as DT120
- Research Investigating Drug Effects-2 (RiDE-2)Not yet recruitingEarly Phase 1University of Illinois at ChicagoNCT06758596Written as THC
- MDMA in Borderline Personality DisorderRecruitingPhase 2Yale UniversityNCT06683014Written as MDMA
- Treatment With Psilocybin for Chronic Neuropathic Pain and Depression (TRANSCEND)RecruitingPhase 2Centre for Addiction and Mental HealthNCT06518720Written as Psilocybin 25 mg
- Psilocybin-assisted Existential, Attachment and RelationaL (PEARL) Therapy for Patients With Advanced Cancer: A Randomized Controlled TrialNot yet recruitingPhase 2University Health Network, TorontoNCT07820033Written as Psilocybin (high dose)
- Preliminary Effectiveness of Hybrid Individual and Group MDMA-assisted Therapy for War-related PTSDRecruitingPhase 2Guy SchusheimNCT05732155Written as methylenedioxymethamphetamine
- Psilocybin Effects on Healthy Aging Biomarkers and Purpose in LifeNot yet recruitingPhase 1Charles RaisonNCT07719088Written as Psilocybin (Usona Institute)
- DReAMzz- Dronabinol and Acetazolamide Medication for Sleep Apnea (ZZ). Dose Confirmation Crossover Study for IHL-42X in Subjects With Obstructive Sleep Apnea.RecruitingPhase 2Incannex Healthcare LtdNCT07635563Written as IHL-42X: 2.5 mg dronabinol + 125 mg acetazolamide
- Psilocybin-Assisted Psychotherapy for the Treatment of Severe Alcohol Use DisorderNot yet recruitingPhase 2Brigham and Women's HospitalNCT07296094Written as Psilocybin
- Dose Optimization of MDMA-Assisted Therapy for PTSDRecruitingPhase 2Bronx VA Medical CenterNCT06418178Written as Midomafetamine
- Pilot Study on the Effects of Psilocybin on Belief Updating and Insight FormationRecruitingPhase 1Brown UniversityNCT07818564Written as Psilocybin (Usona Institute)
- LSD Treatment for Persons With Alcohol Use DisorderRecruitingPhase 2Felix MuellerNCT05474989Written as LSD
- NeuroGuard: Psilocybin Trial for Preventing Chemo-induced NeuropathyNot yet recruitingPhase 2M.D. Anderson Cancer CenterNCT07227909Written as Psilocybin (drug)
- Endocannabinoids in RewardRecruitingPhase 2Medical University of South CarolinaNCT07815691Written as Dronabinol
Codes
What other systems call Hallucinogens · ClinicalTrials.gg INT007593
- MeSH (NLM) D006213HallucinogensOne source ClinicalTrials.gov
| System | Code | Name there | Checked by |
|---|---|---|---|
| MeSH (NLM) | D006213 | Hallucinogens | One source ClinicalTrials.gov |
“Confirmed” means two independent publishers link the code to this drug; “one source”, one does and its name agrees.