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ClinicalTrials.gov public records Last synced Sep 27, 2026, 11:22 AM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo Delta-9-THC Clear all
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Ethanol and Cannabinoid Effects on Simulated Driving and Related Cognition

NCT02404688
View directory record Official record
Conditions
Cannabis, Alcohol Effect, Driving Under the Influence of Alcohol and Other Drugs
Interventions
Active delta-9-THC, Placebo, Active Ethanol
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2026
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 27, 2026, 11:22 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Effects of Delta-9-THC and Iomazenil in Healthy Humans

NCT00982982
View directory record Official record
Conditions
Schizophrenia, Mental Disorders, Psychotic Disorders
Interventions
THC and Iomazenil, Placebo (control)
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years · Male only
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 4, 2022 · Synced Sep 27, 2026, 11:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Behavioral Pharmacology of THC and Alpha-pinene

NCT04130633
View directory record Official record
Conditions
THC, Alpha-pinene
Interventions
Placebo, THC, Alpha-Pinene
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 55 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 21, 2025 · Synced Sep 27, 2026, 11:22 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

AnalgeSiC and appEtite-stimulating Effects of caNnabigerol and THC (ASCENT)

NCT04859296
View directory record Official record
Conditions
Pain, Appetite Loss, Abuse, Drug
Interventions
Placebo, Low CBG, High CBG, Low THC, High THC
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Sep 27, 2026, 11:22 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Clinical Study to Evaluate the Effects of Oral Delta-9-tetrahydrocannabinol (Δ9-THC) With and Without Alcohol on Perception and Driving Performance in Healthy Adults

NCT07176208
View directory record Official record
Conditions
Cannabis, Drug Effects, Driving Performance
Interventions
5 mg Dronabinol (Marinol®) + Placebo Beverage, 10 mg Dronabinol (Marinol®) + Placebo Beverage, 5 mg Dronabinol (Marinol®) + Alcohol Beverage, 10 mg Dronabinol (Marinol®) + Alcohol Beverage, Placebo Capsule + Alcohol Beverage, Placebo Capsule + Placebo Beverage
Drug
Lead sponsor
Food and Drug Administration (FDA)
Federal
Eligibility
21 Years to 55 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
2
States / cities
West Bend, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Sep 27, 2026, 11:22 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Acute Effects of THC in Older Adult

NCT06948136
View directory record Official record
Conditions
Age-related Cognitive Decline
Interventions
Delta-9-THC Low Dose, Placebo, Delta-9-THC Medium Dose
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 17, 2025 · Synced Sep 27, 2026, 11:22 AM EDT
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers

Probing the Cannabinoid System in Individuals With a Family History of Psychosis

NCT02102113
View directory record Official record
Conditions
Psychosis, Cannabis Use, THC, Marijuana, Schizophrenia
Interventions
Placebo, Very Low Dose THC, Low Dose THC
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2026
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 9, 2025 · Synced Sep 27, 2026, 11:22 AM EDT
Completed Phase 2 Interventional Results available

Effect of Cannabinoid Agonist on Gastrointestinal and Colonic Motor Functions in Patients With Irritable Bowel Syndrome (IBS)

NCT01253408
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Dronabinol, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 6, 2013 · Synced Sep 27, 2026, 11:22 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

The Effects of Cannabidiol and ∆-9-THC in Humans

NCT01180374
View directory record Official record
Conditions
Healthy
Interventions
Cannabidiol, Delta-9-THC, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 30, 2022 · Synced Sep 27, 2026, 11:22 AM EDT
Completed Phase 2 Interventional

Efficacy of Inhaled Cannabis for Acute Migraine Treatment

NCT04360044
View directory record Official record
Conditions
Migraine, Cannabis, THC, CBD
Interventions
THC ~5%, CBD ~12%, THC ~5% and CBD ~12%, Sham Cannabis
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 65 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Feb 27, 2023 · Synced Sep 27, 2026, 11:22 AM EDT
Completed No phase listed Observational

Marijuana Drug Discrimination and Self-Administration

NCT00943930
View directory record Official record
Conditions
Marijuana Abuse
Interventions
THC (delta-9 tetrahydrocannabinol), d-amphetamine, oral THC
Drug
Lead sponsor
Wayne State University
Other
Eligibility
21 Years to 45 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 27, 2016 · Synced Sep 27, 2026, 11:22 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Ethanol and Cannabinoid Effects on Simulated Driving and Related Cognition: Sub-Study I

NCT02709954
View directory record Official record
Conditions
Cannabis, Alcohol Effect, Driving Under the Influence of Alcohol and Other Drugs
Interventions
Active inhaled delta-9-THC, Placebo, Active Oral Ethanol
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2026
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 27, 2026, 11:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Testing the Interactive Effects of Delta-9-Tetrahydrocannabinol and Pregnenolone

NCT02576912
View directory record Official record
Conditions
Healthy
Interventions
Active Delta-9-THC, Active Pregnenolone, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 6, 2023 · Synced Sep 27, 2026, 11:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Pharmacokinetics and Pharmacodynamics of Oral and Vaporized Cannabidiol

NCT03164512
View directory record Official record
Conditions
Cannabidiol Pharmacokinetics
Interventions
Oral or vaporized cannabidiol, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 45 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 26, 2020 · Synced Sep 27, 2026, 11:22 AM EDT
Completed Phase 2 Interventional Results available

A Study of Sativex® for Pain Relief in Patients With Advanced Malignancy.

NCT00530764
View directory record Official record
Conditions
Palliative Care, Pain, Cancer
Interventions
Sativex Low Dose, Sativex Medium Dose, Sativex High Dose
Drug
Lead sponsor
GW Pharmaceuticals Ltd
Industry
Eligibility
18 Years and older
Enrollment
360 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
23
States / cities
Tuscaloosa, Alabama • Casa Grande, Arizona • Fountain Valley, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jun 19, 2013 · Synced Sep 27, 2026, 11:22 AM EDT
Completed Phase 2 Interventional

Life's End Benefits of cannaBidiol and tetrahYdrocannabinol

NCT05644262
View directory record Official record
Conditions
Agitation, Dementia
Interventions
T2:C100, Placebo
Drug
Lead sponsor
University of Southern California
Other
Eligibility
40 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
10
States / cities
Washington D.C., District of Columbia • Miami, Florida • Tampa, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Sep 27, 2026, 11:22 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

High Confusion: Cannabis & Driving

NCT06236815
View directory record Official record
Conditions
Impairment, Cognitive, Impairment of Attention, Impairment, Psychomotor
Interventions
Delta-9-THC, Delta-8-THC, Placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 49 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 9, 2025 · Synced Sep 27, 2026, 11:22 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Cognitive and Psychophysiological Effects of Delta-9-Tetrahydrocannabinol in Bipolar Disorder

NCT03206463
View directory record Official record
Conditions
Delta-9-Tetrahydroncannabinol, Bipolar Disorder, Healthy Controls
Interventions
4 mg Delta-9-THC, Placebo, 2 mg Delta-9-THC
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 30, 2022 · Synced Sep 27, 2026, 11:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Comparative Pharmacokinetic and Pharmacodynamic Effects of Delta-8 and Delta-9 THC

NCT05287256
View directory record Official record
Conditions
Behavioral Pharmacology of Cannabis
Interventions
Oral Delta-8-THC Cannabis, Oral Delta-9-THC Cannabis, Oral Placebo, Vaporized Delta-8-THC Cannabis, Vaporized Delta-9-THC Cannabis, Vaporized Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 45 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Sep 27, 2026, 11:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

THC and Ketamine Effects in Humans: Relation to Neural Oscillations and Psychosis

NCT04199468
View directory record Official record
Conditions
Cannabis, Ketamine
Interventions
Active Delta-9-THC, Placebo Delta-9-THC, Active Ketamine, Placebo Ketamine
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 45 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 24, 2024 · Synced Sep 27, 2026, 11:22 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Pregnenolone as a Treatment for Cannabis Intoxication

NCT07216690
View directory record Official record
Conditions
Cannabis Intoxication
Interventions
Cannabis, Pregnenolone 250 mg, Pregnenolone 500 mg, Placebo, Placebo brownie
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Sep 27, 2026, 11:22 AM EDT
Withdrawn Phase 2 Interventional

The Safety, Tolerability and Efficacy of Dronabinol, for the Treatment of Nausea and Vomiting in Familial Dysautonomia

NCT02608931
View directory record Official record
Conditions
Nausea, Vomiting, Familial Dysautonomia
Interventions
Dronabinol, Placebo
Drug · Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 60 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 12, 2019 · Synced Sep 27, 2026, 11:22 AM EDT
Completed Phase 3 Interventional Results available

Sativex® for Relieving Persistent Pain in Participants With Advanced Cancer

NCT01262651
View directory record Official record
Conditions
Pain, Advanced Cancer
Interventions
Nabiximols, Placebo (GA-0034)
Drug
Lead sponsor
GW Pharmaceuticals Ltd
Industry
Eligibility
18 Years and older
Enrollment
397 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
25
States / cities
Phoenix, Arizona • El Cajon, California • Gilroy, California + 19 more
Source: ClinicalTrials.gov public record
Updated Apr 22, 2018 · Synced Sep 27, 2026, 11:22 AM EDT
Recruiting Phase 2 Interventional

Phytocannabinoids for Reducing Chronic Chemotherapy-Induced Peripheral Neuropathy in Breast and Colon Cancer Survivors

NCT06731894
View directory record Official record
Conditions
Breast Carcinoma, Chemotherapy-Induced Peripheral Neuropathy, Colon Carcinoma
Interventions
Biospecimen Collection, Cannabidiol, Dronabinol, Placebo Administration, Survey Administration
Procedure · Drug · Other
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
2
States / cities
Duarte, California • Irvine, California
Source: ClinicalTrials.gov public record
Updated Dec 4, 2025 · Synced Sep 27, 2026, 11:22 AM EDT