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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: THC Clear all
Withdrawn Phase 1 Interventional Accepts healthy volunteers

The Effects of Cannabis on Male Reproductive Functions

NCT06755346
View directory record Official record
Conditions
Male Reproductive Problem
Interventions
Cannabis plant (THC 20mg), Cannabis (0%/ THC / 0% CBD), Cannabis plant (THC 40mg)
Drug
Lead sponsor
Kanako Hayashi
Other
Eligibility
21 Years to 64 Years · Male only
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Pullman, Washington
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 2, 2026, 6:45 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 2, 2026, 6:45 AM EDT
Terminated Not applicable Interventional Results available

Alefacept and Allogeneic Hematopoietic Stem Cell Transplantation

NCT01319851
View directory record Official record
Conditions
Thalassemia, Sickle Cell Disease, Glanzmann Thrombasthenia, Wiskott-Aldrich Syndrome, Chronic-granulomatous Disease, Severe Congenital Neutropenia, Leukocyte Adhesion Deficiency, Schwachman-Diamond Syndrome, Diamond-Blackfan Anemia, Fanconi Anemia, Dyskeratosis-congenita, Chediak-Higashi Syndrome, Severe Aplastic Anemia
Interventions
Alefacept
Drug
Lead sponsor
Emory University
Other
Eligibility
Up to 21 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 26, 2017 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Cannabinoid Modulation of Pain

NCT01595620
View directory record Official record
Conditions
Pain
Interventions
Thermal, Electrical, Capsaicin, THC, Placebo
Other · 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 8, 2022 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 1Phase 2 Interventional

Comparing the Effects of Smoked and Oral Marijuana in Individuals With HIV/AIDS

NCT00079560
View directory record Official record
Conditions
HIV Infections
Interventions
dronabinol
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
21 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2005
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 10, 2017 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Comparison Between Marijuana Smoked in Cigarette Paper Versus Cigar Paper

NCT00374127
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Marijuana blunt, marijuana cigarette
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2008
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 31, 2017 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 4 Interventional Results available

A Study to Find Out How Safe and Effective Gammaplex® is in Young People With Primary Immunodeficiency

NCT01289847
View directory record Official record
Conditions
Primary Immune Deficiency Disorders, Common Variable Immunodeficiency, X-linked Agammaglobulinemia, Hyper-IgM Syndrome, Wiskott-Aldrich Syndrome
Interventions
Gammaplex
Biological
Lead sponsor
Bio Products Laboratory
Other
Eligibility
2 Years to 16 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
8
States / cities
Irvine, California • Los Angeles, California • Centennial, Colorado + 5 more
Source: ClinicalTrials.gov public record
Updated Dec 22, 2014 · Synced Sep 2, 2026, 6:45 AM EDT
Recruiting No phase listed Observational

Impact of Cannabis Use During Third Molar Surgery

NCT07423195
View directory record Official record
Conditions
Cannabis Use, Marijuana Usage, Sedation and Analgesia, Wisdom Tooth
Interventions
Not listed
Lead sponsor
University of Michigan
Other
Eligibility
16 Years to 99 Years
Enrollment
242 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 19, 2026 · Synced Sep 2, 2026, 6:45 AM EDT
Active, not recruiting Phase 2 Interventional

Alpha/Beta T and CD19+ Depleted Peripheral Stem Cells for Patients With Primary Immunodeficiencies

NCT02990819
View directory record Official record
Conditions
Immunodeficiencies, Immune Dysregulation Syndromes
Interventions
Apha/beta T and CD19+ cell depletion using CliniMACS device
Device
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
Up to 25 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Sep 2, 2026, 6:45 AM EDT
Not yet recruiting Early Phase 1 Interventional Accepts healthy volunteers

Evaluating the Delivery and Effects of THC Vaping Liquids in the Bloodstream

NCT06334016
View directory record Official record
Conditions
Cannabis Dependence
Interventions
Biospecimen Collection, Cannabis sativa Extract, Nicotine, Placebo Administration, Questionnaire Administration
Procedure · Drug · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
21 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 2, 2026, 6:45 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Cannabis Use, Cognition, and the Endocannabinoid System in HIV

NCT04883255
View directory record Official record
Conditions
HIV-1-infection
Interventions
10 mg Δ9-tetrahydrocannabinol (THC), 600 mg cannabidiol (CBD), Placebo
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 65 Years
Enrollment
138 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Cannabinoid Receptor Function & Alcoholism

NCT00624715
View directory record Official record
Conditions
Alcoholism
Interventions
THC, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 30 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 10, 2022 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 2Phase 3 Interventional

Risk-Adapted Allogeneic Stem Cell Transplantation For Mixed Donor Chimerism In Patients With Non-Malignant Diseases

NCT01019876
View directory record Official record
Conditions
Bone Marrow Failure, Osteopetrosis, Fanconi Anemia, Severe Combined Immunodeficiency
Interventions
Fludarabine, Cyclophosphamide, Busulfan, Alemtuzumab, Rabbit Anti-thymocyte Globulin, Horse Anti-thymocyte Globulin
Drug
Lead sponsor
Columbia University
Other
Eligibility
Up to 30 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 30, 2024 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Cannabis Administration Routes on Human Performance and Pharmacokinetics

NCT02177513
View directory record Official record
Conditions
Cannabis Use
Interventions
Placebo + Placebo, Oral Cannabis + Placebo, Placebo + Inhaled Cannabis, Placebo + Smoked Cannabis, 6.9% cannabis oral
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 50 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 15, 2019 · Synced Sep 2, 2026, 6:45 AM EDT
Terminated Early Phase 1 Interventional Accepts healthy volunteers

N-acetylcysteine Effects on Tetrahydrocannabinol

NCT02335060
View directory record Official record
Conditions
Healthy
Interventions
Delta-9-THC, N-acetylcysteine, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 30, 2022 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Cannabinoids and Cerebellar-Motor Functioning

NCT01853020
View directory record Official record
Conditions
Cannabis, Psychotic Disorders
Interventions
THC, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 35 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 2, 2026, 6:45 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 28, 2023 · Synced Sep 2, 2026, 6:45 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 23, 2023 · Synced Sep 2, 2026, 6:45 AM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers

Behavioral Pharmacology of THC and Beta-Myrcene

NCT05432284
View directory record Official record
Conditions
Cannabis Use
Interventions
Placebo, THC, Beta-Myrcene
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 55 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027 – 2028
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Phase 2 Interventional

Cannabinoids and Traumatic Brain Injury: A Randomized, Placebo Controlled Trial

NCT05632627
View directory record Official record
Conditions
Brain Injuries, Traumatic
Interventions
Cannabidiol, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 60 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Sep 2, 2026, 6:45 AM EDT
Terminated Phase 3 Interventional Results available

Evaluation of the Effect of Nabiximols Oromucosal Spray on Clinical Measures of Spasticity in Participants With Multiple Sclerosis

NCT04984278
View directory record Official record
Conditions
Spasticity With Multiple Sclerosis
Interventions
Nabiximols, Placebo
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
6
States / cities
Denver, Colorado • Naples, Florida • Tampa, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 10, 2024 · Synced Sep 2, 2026, 6:45 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Effects of THC on Emotional Memory Retrieval

NCT03471585
View directory record Official record
Conditions
Healthy
Interventions
THC, Placebo oral capsule
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 35 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 29, 2019 · Synced Sep 2, 2026, 6:45 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 20, 2015 · Synced Sep 2, 2026, 6:45 AM EDT
Not listed Phase 2 Interventional

Safety and Efficacy of Inhaled Cannabis For the Uncontrolled Pain Relief in Patients With Advanced Cancer

NCT04042545
View directory record Official record
Conditions
Cancer Pain, Quality of Life, Pain, Acute, Cannabis Use
Interventions
PPP001, Placebo
Drug
Lead sponsor
Tetra Bio-Pharma
Industry
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Cave Creek, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 15, 2021 · Synced Sep 2, 2026, 6:45 AM EDT