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ClinicalTrials.gov public records Last synced Oct 21, 2026, 7:13 AM EDT

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Showing 1–24 of 200 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: THC Cannabis Clear all
Completed Early Phase 1 Interventional Accepts healthy volunteers

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

NCT01591629
View directory record Official record
Conditions
Healthy
Interventions
Naloxone, Delta-9-THC, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 9, 2022 · Synced Oct 21, 2026, 7:13 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Assessing Claims of Cannabis as an Anti-cancer Agent (CATA)

NCT07107607
View directory record Official record
Conditions
Cancer, Cancer (With or Without Metastasis)
Interventions
Not listed
Lead sponsor
HealthPartners Institute
Other
Eligibility
Not listed
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Saint Louis Park, Minnesota
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Oct 21, 2026, 7:13 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Effects of Dronabinol (Oral THC) on Cannabis Use

NCT01394185
View directory record Official record
Conditions
Marijuana Smoking
Interventions
Dronabinol 120mg/day, Placebo, Dronabinol 240mg/day
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 100 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 3, 2017 · Synced Oct 21, 2026, 7:13 AM EDT
Completed Phase 2 Interventional Results available

Pilot Study of the Safety and Efficacy of Four Different Potencies of Smoked Marijuana in 76 Veterans With PTSD

NCT02759185
View directory record Official record
Conditions
Posttraumatic Stress Disorder
Interventions
High THC cannabis, High CBD cannabis, THC/CBD cannabis, Placebo cannabis
Drug
Lead sponsor
Multidisciplinary Association for Psychedelic Studies
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 12, 2023 · Synced Oct 21, 2026, 7:13 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Responses to Marijuana-Related Cues Versus Neutral Cues in Adults Taking Tetrahydrocannabinol (THC) - 2

NCT00218504
View directory record Official record
Conditions
Marijuana Abuse
Interventions
Tetrahydrocannabinol
Drug
Lead sponsor
Wayne State University
Other
Eligibility
21 Years to 45 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 5, 2012 · Synced Oct 21, 2026, 7:13 AM EDT
Completed Early Phase 1 Interventional Results available

Dronabinol Interactions With Cognitive Enhancing Drug in Humans

NCT00842985
View directory record Official record
Conditions
Cannabis, Marijuana Abuse
Interventions
drug condition
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 30, 2017 · Synced Oct 21, 2026, 7:13 AM EDT
Completed Not applicable Interventional Results available

Pain Inflammation and Cannabis in HIV

NCT05554146
View directory record Official record
Conditions
HIV Infections, Neuropathic Pain, Cannabis
Interventions
Receipt of Coupon for Placebo Soft-Gel Capsule, Receipt of Coupon for High THC Soft-Gel Capsule, Receipt of Coupon for Equal THC and CBD Soft-Gel Capsule, Receipt of Coupon for High CBD Soft-Gel Capsule
Other
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years to 100 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Oct 21, 2026, 7:13 AM EDT
Completed Phase 2 Interventional Results available

Effectiveness Study of Dronabinol and BRENDA for the Treatment of Cannabis Withdrawal

NCT00480441
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Dronabinol, BRENDA therapy, Placebo
Drug · Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 55 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 29, 2019 · Synced Oct 21, 2026, 7:13 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 5, 2022 · Synced Oct 21, 2026, 7:13 AM EDT
Completed Phase 1Phase 2 Interventional

Medicinal Cannabis for Painful HIV Neuropathy

NCT00255580
View directory record Official record
Conditions
Neuropathic Pain
Interventions
Smoked cannabis
Drug
Lead sponsor
Center for Medicinal Cannabis Research
Other
Eligibility
21 Years to 65 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2006
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Feb 28, 2008 · Synced Oct 21, 2026, 7:13 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Cannabis Consumption and Driving Impairment Assessment on a Closed Course

NCT06059677
View directory record Official record
Conditions
Cannabis Smoking, Driving Impaired
Interventions
Active smoked cannabis, Placebo smoked cannabis
Drug
Lead sponsor
Bayliss J. Camp, PhD
Government
Eligibility
21 Years to 55 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Sep 29, 2023 · Synced Oct 21, 2026, 7:13 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

The Impact of Oral Cannabis Administration and Co-Administration of Alcohol on Impairment

NCT04931095
View directory record Official record
Conditions
Cannabis Intoxication, Alcohol Intoxication
Interventions
Cannabis, Alcohol
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 55 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 3, 2026 · Synced Oct 21, 2026, 7:13 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Differences in Cannabis Impairment and Its Measurement Due to Route of Administration

NCT03122691
View directory record Official record
Conditions
Behavioral Pharmacology of Cannabis
Interventions
cannabis
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 45 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 21, 2023 · Synced Oct 21, 2026, 7:13 AM EDT
Completed No phase listed Observational

Can Medical Cannabis Affect Opioid Use?

NCT06206252
View directory record Official record
Conditions
Chronic Pain, Pain
Interventions
Medical Cannabis
Other
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Oct 21, 2026, 7:13 AM EDT
Completed Not applicable Interventional

The Impact of Excise Tax Structures for Retail Marijuana on Marijuana Consumption

NCT06848543
View directory record Official record
Conditions
Hypothetical Cannabis Purchase
Interventions
Arm 1 Intervention, Arm 2 Intervention, Arm 3 intervention
Behavioral
Lead sponsor
Ohio State University
Other
Eligibility
15 Years and older
Enrollment
4,696 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Oct 21, 2026, 7:13 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

The Effects of Cannabis Use in People With Schizophrenia on Clinical, Neuropsychological and Physiological Phenotypes

NCT01832766
View directory record Official record
Conditions
Schizophrenia
Interventions
Dronabinol, Placebo Comparator
Drug · Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 50 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 21, 2015 · Synced Oct 21, 2026, 7:13 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Dronabinol Treatment for Marijuana Addiction

NCT00217971
View directory record Official record
Conditions
Marijuana Abuse
Interventions
Dronabinol, Placebo
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 60 Years
Enrollment
156 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 24, 2019 · Synced Oct 21, 2026, 7:13 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Testing the Interactive Effects of Delta-9-Tetrahydrocannabinol and Pregnenolone: Sub-Study I

NCT02811939
View directory record Official record
Conditions
Healthy
Interventions
Active Dronabinol, Active Pregnenolone, Placebo Dronabinol, Placebo Pregnenolone
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 2, 2022 · Synced Oct 21, 2026, 7:13 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Nabilone in Cannabis Users With PTSD

NCT03251326
View directory record Official record
Conditions
Cannabis, Post Traumatic Stress Disorder
Interventions
Nabilone, Cannabis, Propranolol, Placebo
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
4 participants
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 Jul 15, 2022 · Synced Oct 21, 2026, 7:13 AM EDT
Completed Phase 1 Interventional Results available

Opioid and Cannabinoid Interactions

NCT03705559
View directory record Official record
Conditions
Marijuana Usage, Opioid Use
Interventions
Vaporized Marijuana, Opioid Agonist, Placebo
Drug
Lead sponsor
Shanna Babalonis, PhD
Other
Eligibility
18 Years to 50 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Apr 10, 2025 · Synced Oct 21, 2026, 7:13 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 7, 2023 · Synced Oct 21, 2026, 7:13 AM EDT
Completed Phase 2 Interventional

Reducing Pain and Opioid Use With CBD

NCT05299944
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
Cannabidiol, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
2
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 12, 2025 · Synced Oct 21, 2026, 7:13 AM EDT
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 29, 2026 · Synced Oct 21, 2026, 7:13 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Interactions Between Cannabinoids and Cytochrome P450-Metabolized Drugs

NCT04201197
View directory record Official record
Conditions
Drug-Interactions
Interventions
Inje cocktail, THC Cannabis extract, THC/CBD Cannabis Extract
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 50 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 24, 2023 · Synced Oct 21, 2026, 7:13 AM EDT