Yale University (West Haven) psychedelic research trials
Data as of 11 October 2026. Source: ClinicalTrials.gov records held by PsychoactiveMap, refreshed from a reviewed snapshot.
Yale University is listed with 16 registered studies counted here, in West Haven, United States. By compound: 7 psilocybin, 2 DMT and 7 ketamine. By registry status: 4 recruiting, 2 active, not recruiting, 8 completed, 1 terminated and 1 withdrawn. By phase: 2 early phase 1, 12 phase 1 and 2 phase 2. Reported start years run from 2002 (earliest) to 2025 (latest).
Institution name, city and country are copied from the research site linked to each registry record. A study counts once per institution, and a study tagged with more than one compound is counted under each compound.
Educational information, not medical advice. A registry listing is not evidence of safety, benefit or results, and it is not a recommendation. PsychoactiveMap does not recruit, screen or refer participants. Status and other details are copied from the registry and can be out of date, so check the registry record and speak to a qualified health professional before any decision. Read the full disclaimer.
At a glance
- 16 registered studies are counted on this page.
By compound
| Compound hub | Studies |
|---|---|
| Psilocybin | 7 |
| DMT | 2 |
| Ketamine | 7 |
By registry status
| Status | Studies | Share |
|---|---|---|
| Recruiting | 4 | 25% |
| Active, not recruiting | 2 | 13% |
| Completed | 8 | 50% |
| Terminated | 1 | 6% |
| Withdrawn | 1 | 6% |
By phase
| Phase | Studies | Share |
|---|---|---|
| Early Phase 1 | 2 | 13% |
| Phase 1 | 12 | 75% |
| Phase 2 | 2 | 13% |
Registered studies
All counted studies, newest start first. The order is not a ranking and says nothing about quality. Titles are quoted from the registry. Each ID links to its own ClinicalTrials.gov record, which has the eligibility criteria and contacts.
| Title as registered | Registry ID | Status | Phase | Start | Compound |
|---|---|---|---|---|---|
| Psilocybin as a Treatment for Chronic Pain in Smokers | NCT07118332 | Recruiting | Early Phase 1 | 2025-10-01 | Psilocybin |
| Mechanistic Studies of Psilocybin in Headache Disorders | NCT06464367 | Recruiting | Early Phase 1 | 2025-05-19 | Psilocybin |
| Study of the Safety, Tolerability, Electrophysiological Effects and Efficacy of DMT in Humans | NCT06671977 | Recruiting | Phase 1 | 2025-03-14 | DMT |
| The Impact of AMPA Receptor Blockade on Ketamine's Anti-Suicidal Effects | NCT05786066 | Recruiting | Phase 2 | 2023-04-03 | Ketamine |
| Repeat Dosing of Psilocybin in Migraine Headache | NCT04218539 | Completed | Phase 1 | 2021-08-10 | Psilocybin |
| Fixed Order, Open-Label, Dose-Escalation Study of DMT in Humans | NCT04711915 | Active, not recruiting | Phase 1 | 2021-03-17 | DMT |
| THC and Ketamine Effects in Humans: Relation to Neural Oscillations and Psychosis | NCT04199468 | Completed | Phase 1 | 2019-09-24 | Ketamine |
| Effects of Psilocybin in Concussion Headache | NCT03806985 | Terminated | Phase 1 | 2019-03-28 | Psilocybin |
| Psilocybin - Induced Neuroplasticity in the Treatment of Major Depressive Disorder | NCT03554174 | Active, not recruiting | Phase 1 | 2018-02-27 | Psilocybin |
| Psilocybin for the Treatment of Migraine Headache | NCT03341689 | Completed | Phase 1 | 2017-11-01 | Psilocybin |
| Psilocybin for the Treatment of Cluster Headache | NCT02981173 | Completed | Phase 1 | 2016-12-05 | Psilocybin |
| Trial of Ketamine and Lithium Therapy in Bipolar Depression | NCT01768767 | Withdrawn | Phase 2 | 2013-01-01 | Ketamine |
| Ketamine for Depression and Alcohol Dependence | NCT01551329 | Completed | Phase 1 | 2012-03-01 | Ketamine |
| Pilot Study of ORG 25935 Modulation of Ketamine-induced Behavioral and Cognitive Effects in Healthy Male Subjects | NCT00700076 | Completed | Phase 1 | 2008-01-22 | Ketamine |
| Parallel Effects of Schizophrenia and N-methyl-D-aspartate (NMDA) Antagonism | NCT02675530 | Completed | Phase 1 | 2007-12-01 | Ketamine |
| Nicotinic Modulation of Schizophrenia-like Information Processing Deficits in Healthy Subjects | NCT00690170 | Completed | Phase 1 | 2002-12-01 | Ketamine |
About this data
Compound tags come from automated matching of the registry search term and have not been checked record by record. Counts are of registered studies, not of people, results or approvals. A registry listing is not evidence of safety, benefit or results.
Substance hubs for these compounds
Psilocybin | DMT | Ketamine