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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: THC Clear all
Active, not recruiting Phase 2 Interventional

Immune Disorder HSCT Protocol

NCT01821781
View directory record Official record
Conditions
Immune Deficiency Disorders, Severe Combined Immunodeficiency, Chronic Granulomatous Disease, X-linked Agammaglobulinemia, Wiskott-Aldrich Syndrome, Hyper-IgM, DiGeorge Syndrome, Chediak-Higashi Syndrome, Common Variable Immune Deficiency, Immune Dysregulatory Disorders, Hemophagocytic Lymphohistiocytosis, IPEX, Autoimmune Lymphoproliferative Syndrome, X-linked Lymphoproliferative Syndrome
Interventions
Transplant preparative regimen of alemtuzumab, fludarabine, thiotepa, and melphalan
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
Up to 21 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 18, 2026 · Synced Jul 22, 2026, 10:44 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 Jul 22, 2026, 10:44 AM EDT
Terminated Early Phase 1 Interventional Accepts healthy volunteers Results available

Understanding Effects of Cannabis Use and Abstinence on Neural Glutamate Homeostasis

NCT05664763
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
[18F]FPEB with PET, Cannabis abstinence
Drug · Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 18, 2025 · Synced Jul 22, 2026, 10:44 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Effects of Cannabidiol and Tetrahydrocannabinol on Microbiome and Neuroinflammation in HIV

NCT05514899
View directory record Official record
Conditions
HIV, Cannabis, THC, Neuroinflammatory Disease, Neuroinflammatory Response, Microbiome
Interventions
THC, CBD
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 70 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Jul 22, 2026, 10:44 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Detection of Cannabis Impairment With ISBRG's SpotLight-THC

NCT05276232
View directory record Official record
Conditions
Cannabis
Interventions
Cannabis(THC) inhaled
Drug
Lead sponsor
ISBRG Corp
Other
Eligibility
18 Years and older
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Mar 10, 2022 · Synced Jul 22, 2026, 10:44 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Analgesic and Subjective Effects of Terpenes

NCT04451863
View directory record Official record
Conditions
Pain, Abuse, Drug
Interventions
Low THC, High THC, Low Myrcene, High Myrcene, Low Beta-Caryophyllene, High Beta-Caryophyllene, Placebo
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years to 55 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Jul 22, 2026, 10:44 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Motivation and Skills for Delta-9-tetrahydrocannabinol/Ethanol (THC/ETOH+) Teens in Jail

NCT00506753
View directory record Official record
Conditions
Alcohol Drinking, Marijuana Smoking
Interventions
MI/CBT, RT/SU
Behavioral
Lead sponsor
University of Rhode Island
Other
Eligibility
14 Years to 19 Years
Enrollment
205 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2011
U.S. locations
1
States / cities
Cranston, Rhode Island
Source: ClinicalTrials.gov public record
Updated May 14, 2019 · Synced Jul 22, 2026, 10:44 AM EDT
Completed Phase 2 Interventional

Study to Evaluate the Efficacy and Safety of Dronabinol Metered Dose Inhaler (MDI) in Acute Treatment of Migraine Headache

NCT00123201
View directory record Official record
Conditions
Migraine With Aura, Migraine Without Aura
Interventions
Dronabinol MDI
Drug
Lead sponsor
Solvay Pharmaceuticals
Industry
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
29
States / cities
Huntsville, Alabama • Tucson, Arizona • Anaheim, California + 23 more
Source: ClinicalTrials.gov public record
Updated Jan 15, 2015 · Synced Jul 22, 2026, 10:44 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 Jul 22, 2026, 10:44 AM EDT
Not listed Phase 2 Interventional

Cannabinoid Tablets for the Treatment of Pain From Osteoarthritis of the Knee

NCT04992962
View directory record Official record
Conditions
Osteoarthritis, Knee
Interventions
CBD/CBN, CBD/THC, Placebo
Drug
Lead sponsor
Pure Green
Industry
Eligibility
21 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
West Bloomfield, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 5, 2021 · Synced Jul 22, 2026, 10:44 AM EDT
Completed Phase 1 Interventional

Effects of Delta9-tetrahydrocannabinol (THC) on Retention of Memory for Fear Extinction Learning in PTSD: R33 Study

NCT04080427
View directory record Official record
Conditions
Posttraumatic Stress Disorder
Interventions
Placebo capsule, Dronabinol 7.5 milligram oral capsule
Drug
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 60 Years
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 10, 2025 · Synced Jul 22, 2026, 10:44 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Dronabinol Opioid Sparing Evaluation (DOSE) Trial

NCT03766269
View directory record Official record
Conditions
Chronic Pain
Interventions
Dronabinol
Drug
Lead sponsor
Daisy Pharma Opioid Venture, LLC
Industry
Eligibility
18 Years and older
Enrollment
280 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Dec 5, 2018 · Synced Jul 22, 2026, 10:44 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Pharmacogenetics of Cannabinoid Response

NCT00678730
View directory record Official record
Conditions
COMT Gene Polymorphism
Interventions
delta 9 tetrahydrocannabinol
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2014
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 8, 2022 · Synced Jul 22, 2026, 10:44 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 Jul 22, 2026, 10:44 AM EDT
Completed Phase 1 Interventional

Bone Marrow Transplant With Abatacept for Non-Malignant Diseases

NCT01917708
View directory record Official record
Conditions
Hurler Syndrome, Fanconi Anemia, Glanzmann Thrombasthenia, Wiskott-Aldrich Syndrome, Chronic Granulomatous Disease, Severe Congenital Neutropenia, Leukocyte Adhesion Deficiency, Shwachman-Diamond Syndrome, Diamond-Blackfan Anemia, Dyskeratosis-congenita, Chediak-Higashi Syndrome, Severe Aplastic Anemia, Thalassemia Major, Hemophagocytic Lymphohistiocytosis, Sickle Cell Disease
Interventions
Abatacept
Drug
Lead sponsor
Emory University
Other
Eligibility
Up to 21 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 25, 2019 · Synced Jul 22, 2026, 10:44 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Thrombocytopenia and Bleeding in Wiskott-Aldrich Syndrome (WAS) Patients

NCT00909363
View directory record Official record
Conditions
Wiskott-Aldrich Syndrome, Thrombocytopenia, Bleeding
Interventions
Promacta, blood drawing in patients with WAS, blood drawing in healthy controls
Drug · Diagnostic Test
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
3 Months to 80 Years · Male only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 17, 2019 · Synced Jul 22, 2026, 10:44 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Examine the Feasibility of a Standardized Field Test for Marijuana Impairment: Laboratory Evaluations

NCT03191084
View directory record Official record
Conditions
Marijuana Impairment
Interventions
Low Dose THC Marijuana, High Dose THC Marijuana, Placebo Marijuana
Drug
Lead sponsor
Yale University
Other
Eligibility
20 Years to 40 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 22, 2024 · Synced Jul 22, 2026, 10:44 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Cannabis and Schizophrenia: Self-Medication and Agonist Treatment

NCT00946348
View directory record Official record
Conditions
Schizophrenia, Dual Diagnosis, Schizoaffective Disorder, Psychotic Disorder, Cannabis Use Disorder
Interventions
Dronabinol, Cannabis
Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Jul 11, 2021 · Synced Jul 22, 2026, 10:44 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Using Imaging to Assess Effects of THC on Brain Activity

NCT03655717
View directory record Official record
Conditions
Intoxication Alcohol, Intoxication THC, Intoxication Combined Alcohol THC
Interventions
Dronabinol, Ethanol, Placebo dronabinol, Placebo ethanol
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 55 Years
Enrollment
316 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 27, 2022 · Synced Jul 22, 2026, 10:44 AM EDT
Completed No phase listed Observational

Study of Megakaryocytes From Patients With Abnormal Platelet Vesicles

NCT00086476
View directory record Official record
Conditions
Blood Coagulation Disorders
Interventions
Not listed
Lead sponsor
National Human Genome Research Institute (NHGRI)
NIH
Eligibility
2 Years to 80 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 22, 2026, 10:44 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Cannabis' Impact on Alcohol Consumption

NCT05389930
View directory record Official record
Conditions
Alcohol Drinking, Cannabis Use, Cannabis, Alcohol Use Disorder
Interventions
THC-dominant cannabis, CBD-dominant cannabis, Cannabis placebo, Alcohol, Alcohol placebo
Drug
Lead sponsor
Brown University
Other
Eligibility
21 Years to 50 Years
Enrollment
350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Aug 5, 2024 · Synced Jul 22, 2026, 10:44 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 28, 2019 · Synced Jul 22, 2026, 10:44 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Vaping THC From Electronic Cigarettes

NCT02955329
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Nicotine, Cannabis, PAX Loose Leaf Vaporizer
Drug · Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 70 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 28, 2023 · Synced Jul 22, 2026, 10:44 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 Jul 22, 2026, 10:44 AM EDT