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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Medical Marijuana Clear all
Enrolling by invitation No phase listed Observational

Prevalence and Clinical Manifestations of Cannabis Withdrawal in Hospitalized Patients With Hematological Malignancies Undergoing Bone Marrow Transplant (BMT) or Chimeric Antigen Receptor T-Cell (CAR-T) Therapy

NCT07594496
View directory record Official record
Conditions
Hematopoietic and Lymphatic System Neoplasm, Malignant Solid Neoplasm
Interventions
Non-Interventional Study
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Sep 24, 2026, 10:20 AM EDT
Completed No phase listed Observational

Medical Marijuana Use in HIV+ Patients: Probability Survey

NCT01536912
View directory record Official record
Conditions
HIV Positive
Interventions
Not listed
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 70 Years
Enrollment
218 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 29, 2015 · Synced Sep 24, 2026, 10:20 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Vaporized Cannabis and Spinal Cord Injury Pain

NCT01555983
View directory record Official record
Conditions
Spinal Cord Injuries, Spinal Cord Diseases
Interventions
Vaporization of Cannabis
Drug
Lead sponsor
Barth Wilsey
Other
Eligibility
18 Years to 70 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Mather, California
Source: ClinicalTrials.gov public record
Updated Apr 17, 2017 · Synced Sep 24, 2026, 10:20 AM EDT
Completed Not applicable Interventional Results available

Reducing Cannabis Use for Sleep Among Adults Using Medical Cannabis

NCT03964974
View directory record Official record
Conditions
Insomnia Chronic, Cannabis Use
Interventions
Cognitive Behavioral Therapy for Insomnia in Cannabis Users (CBTi-CB), Sleep Hygiene Education (SHE)
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
21 Years and older
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
2
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 13, 2022 · Synced Sep 24, 2026, 10:20 AM EDT
Completed Not applicable Interventional Results available

Evaluation of Medical Cannabis and Prescription Opioid Taper Support for Reduction of Pain and Opioid Dose in Patients With Chronic Non-Cancer Pain

NCT04827992
View directory record Official record
Conditions
Opioid Use, Pain, Marijuana Use
Interventions
Cannabis, Prescription Opioid Taper Support (POTS)
Drug · Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 75 Years
Enrollment
87 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
3
States / cities
Portland, Maine • Boston, Massachusetts • Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 23, 2026 · Synced Sep 24, 2026, 10:20 AM EDT
Completed Phase 1Phase 2 Interventional

Short-Term Effects of Medicinal Cannabis Therapy on Spasticity in Multiple Sclerosis

NCT00248378
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Smoked Cannabis
Drug
Lead sponsor
Center for Medicinal Cannabis Research
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2005
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jun 22, 2006 · Synced Sep 24, 2026, 10:20 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Outcomes Mandate National Integration With Cannabis as Medicine

NCT03944447
View directory record Official record
Conditions
Chronic Pain, Chronic Pain Syndrome, Chronic Pain Due to Injury, Chronic Pain Due to Trauma, Fibromyalgia, Seizures, Hepatitis C, Cancer, Crohn Disease, HIV/AIDS, Multiple Sclerosis, Traumatic Brain Injury, Sickle Cell Disease, Post Traumatic Stress Disorder, Tourette Syndrome, Ulcerative Colitis, Glaucoma, Epilepsy, Inflammatory Bowel Diseases, Parkinson Disease, Amyotrophic Lateral Sclerosis, Chronic Traumatic Encephalopathy, Anxiety, Depression, Insomnia, Autism, Opioid-use Disorder, Bipolar Disorder, Covid19, SARS-CoV Infection, COVID-19, Corona Virus Infection, Coronavirus
Interventions
Cannabis, Medical, RYAH-Medtech Inhaler
Drug · Device
Lead sponsor
OMNI Medical Services, LLC
Network
Eligibility
7 Years and older
Enrollment
200,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2025
U.S. locations
17
States / cities
Boca Raton, Florida • Bradenton, Florida • Fort Lauderdale, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Jun 1, 2022 · Synced Sep 24, 2026, 10:20 AM EDT
Completed No phase listed Observational

Medical Cannabis During Chemoradiation for Head and Neck Cancer

NCT03431363
View directory record Official record
Conditions
Head and Neck Cancer
Interventions
Not listed
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Mar 4, 2026 · Synced Sep 24, 2026, 10:20 AM EDT
Completed No phase listed Observational

Cannabis Use Patterns Among Cancer Patients

NCT05132842
View directory record Official record
Conditions
Hematopoietic and Lymphoid Cell Neoplasm, Malignant Solid Neoplasm
Interventions
Survey Administration
Other
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
1,568 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 14, 2025 · Synced Sep 24, 2026, 10:20 AM EDT
Completed Not applicable Interventional

Marijuana Treatment Project - 3

NCT00107588
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Reinforcement for homework completion, Reinforcement for Abstinence, Case Management
Behavioral
Lead sponsor
UConn Health
Other
Eligibility
18 Years to 80 Years
Enrollment
215 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 27, 2017 · Synced Sep 24, 2026, 10:20 AM EDT
Recruiting Phase 2 Interventional

Medical Cannabis in Patients With Advanced Pancreatic and Colorectal Cancer

NCT06605430
View directory record Official record
Conditions
Pancreatic Cancer Non-resectable, Pancreatic Cancer Metastatic, Colorectal Cancer Metastatic
Interventions
Medical Cannabis
Drug
Lead sponsor
HealthPartners Institute
Other
Eligibility
18 Years and older
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Saint Louis Park, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 28, 2025 · Synced Sep 24, 2026, 10:20 AM EDT
Completed No phase listed Observational

Medical Marijuana Use in HIV+ Patients Prospective Cohort Study

NCT01536899
View directory record Official record
Conditions
HIV Positive, Marijuana Smoking
Interventions
Not listed
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 70 Years
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 4, 2018 · Synced Sep 24, 2026, 10:20 AM EDT
Not listed No phase listed Observational

The Use of Medicinal Cannabinoids as Adjunctive Treatment for Medically Refractory Epilepsy

NCT02523183
View directory record Official record
Conditions
Epilepsy, Unspecified, Refractory (Medically)
Interventions
Medical Cannabis
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
1 Month to 20 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 17, 2020 · Synced Sep 24, 2026, 10:20 AM EDT
Completed No phase listed Observational

Pharmacogenetic Variation: Factors That May Affect the Efficacy and Safety of Medical Marijuana

NCT04083261
View directory record Official record
Conditions
New York Medical Marijuana Program Qualifying Conditions
Interventions
DNA Genotek Oragene 600
Other
Lead sponsor
Columbia Care Inc.
Other
Eligibility
18 Years and older
Enrollment
157 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 9, 2020 · Synced Sep 24, 2026, 10:20 AM EDT
Completed Phase 2 Interventional Results available

Gabapentin Treatment of Cannabis Dependence

NCT00395044
View directory record Official record
Conditions
Cannabis Dependence
Interventions
Placebo, Gabapentin
Drug
Lead sponsor
The Scripps Research Institute
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Feb 9, 2017 · Synced Sep 24, 2026, 10:20 AM EDT
Recruiting No phase listed Observational

Assessing Benefits and Harms of Cannabis/Cannabinoid Use Among Cancer Patients Treated in Community Oncology Clinics

NCT06418204
View directory record Official record
Conditions
Breast Carcinoma, Colorectal Carcinoma, Lung Non-Small Cell Carcinoma, Melanoma, Non-Hodgkin Lymphoma
Interventions
Non-interventional Study
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
464
States / cities
Fairbanks, Alaska • Kingman, Arizona • Phoenix, Arizona + 360 more
Source: ClinicalTrials.gov public record
Updated Mar 16, 2026 · Synced Sep 24, 2026, 10:20 AM EDT
Completed No phase listed Observational

Genetic Analysis Between Charlotte's Web Responders Versus Non- Responders in a Dravet Population

NCT02229032
View directory record Official record
Conditions
Dravet Syndrome
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
Up to 50 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 14, 2017 · Synced Sep 24, 2026, 10:20 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Marijuana Treatment Project 4

NCT02030665
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Contingency Management, Individualized Assessment & Treatment, Cognitive-Behavioral Treatment
Behavioral
Lead sponsor
UConn Health
Other
Eligibility
18 Years to 99 Years
Enrollment
198 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 20, 2019 · Synced Sep 24, 2026, 10:20 AM EDT
Completed Phase 1Phase 2 Interventional

Dental and Medical Office iMET to Reduce Teen Tobacco, Alcohol, and Drug Use

NCT00907309
View directory record Official record
Conditions
Use; Tobacco, Harmful, Alcohol Abuse, Drug Abuse
Interventions
iMET, iMET/TE
Behavioral
Lead sponsor
Boston Children's Hospital
Other
Eligibility
12 Years to 21 Years
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 6, 2016 · Synced Sep 24, 2026, 10:20 AM EDT
Completed No phase listed Observational

Medical Cannabis Registry and Pharmacology

NCT03699527
View directory record Official record
Conditions
Autism, ASD
Interventions
Multiple questionnaires administered
Behavioral
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
Up to 21 Years
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 26, 2020 · Synced Sep 24, 2026, 10:20 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Imaging Cannabinoid Receptors Using Positron Emission Tomography (PET) Scanning

NCT01730781
View directory record Official record
Conditions
Schizophrenia, Cannabis Dependence, Prodromal for Psychotic Illness, Family History of Alcoholism, Healthy Control, Opioid-use Disorder, Post Traumatic Stress Disorder
Interventions
[11-C]OMAR
Radiation
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years · Male only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2026
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 26, 2026 · Synced Sep 24, 2026, 10:20 AM EDT
Not yet recruiting No phase listed Observational

Medical Cannabis Observational Study for Antiemetic Intervention in Chemotherapy

NCT07374939
View directory record Official record
Conditions
Nausea and Vomiting Chemotherapy-Induced
Interventions
Medical Cannabis
Drug
Lead sponsor
University of Rochester
Other
Eligibility
21 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 24, 2026, 10:20 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 6, 2026 · Synced Sep 24, 2026, 10:20 AM EDT
Completed No phase listed Observational

Medical Marijuana in the Pediatric Central Nervous System Tumor Population

NCT03052738
View directory record Official record
Conditions
Central Nervous System Tumor, Brain Tumor, Spinal Tumor
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
2 Years to 18 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 28, 2024 · Synced Sep 24, 2026, 10:20 AM EDT