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Showing 1–21 of 21 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: CBD 800 mg Clear all
Completed Phase 2 Interventional Results available

Laboratory Study of Cannabidiol on the Effects of Smoked Marijuana

NCT01844687
View directory record Official record
Conditions
Smoking, Marijuana
Interventions
CBD
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 50 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
3
States / cities
Lexington, Kentucky • New York, New York • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Dec 8, 2019 · Synced Sep 7, 2026, 9:07 AM EDT
Completed Phase 2Phase 3 Interventional Results available

A Trial of Levodopa in Angelman Syndrome

NCT01281475
View directory record Official record
Conditions
Angelman Syndrome
Interventions
Levodopa, Placebo Oral Capsule
Drug
Lead sponsor
Wen-Hann Tan
Other
Eligibility
4 Years to 12 Years
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
7
States / cities
San Diego, California • San Francisco, California • Boston, Massachusetts + 4 more
Source: ClinicalTrials.gov public record
Updated Jul 14, 2020 · Synced Sep 7, 2026, 9:07 AM EDT
Completed Phase 1 Interventional Results available

Epidiolex (CBD) in Patients With Biochemically Recurrent Prostate Cancer

NCT04428203
View directory record Official record
Conditions
Prostate Cancer Recurrent, Prostate Cancer, Prostate Adenocarcinoma
Interventions
Epidiolex Oral Liquid Product
Drug
Lead sponsor
Zin W Myint
Other
Eligibility
18 Years and older · Male only
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Mar 4, 2025 · Synced Sep 7, 2026, 9:07 AM EDT
Not yet recruiting Phase 3 Interventional

Dronabinol and Epidiolex to Manage Uncontrolled Residual Symptoms of Buprenorphine Initiation Trial

NCT07148206
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
Dronabinol Capsules, Epidiolex 100 mg/mL Oral Solution, Placebo Dronabinol, Placebo Epidiolex
Drug · Other
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 7, 2026, 9:07 AM EDT
Completed Phase 2 Interventional Results available

Acute and Short-term Effects of CBD on Cue-induced Craving in Drug-abstinent Heroin-dependent Humans

NCT02539823
View directory record Official record
Conditions
Opiate Addiction
Interventions
CBD 400 mg, CBD 800 mg, Control (placebo)
Drug
Lead sponsor
Hurd,Yasmin, Ph.D.
Individual
Eligibility
21 Years to 65 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 31, 2022 · Synced Sep 7, 2026, 9:07 AM EDT
Recruiting Phase 2 Interventional

Cannabidiol as a Treatment for PTSD and PTSD Comorbid With TBI

NCT04550377
View directory record Official record
Conditions
Post Traumatic Stress Disorder, Traumatic Brain Injury
Interventions
Cannabidiol, Placebo
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 70 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Sep 7, 2026, 9:07 AM EDT
Recruiting Phase 1Phase 2 Interventional

SCORE Emerging Adult Cannabis Use & Stress

NCT05885542
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
Cannabidiol oral solution, Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 25 Years
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Nov 4, 2025 · Synced Sep 7, 2026, 9:07 AM EDT
Completed Phase 2 Interventional Results available

Cognitive Remediation for Cocaine Dependence

NCT01393457
View directory record Official record
Conditions
Cocaine Dependence
Interventions
levodopa/carbidopa, Ropinirole 2 mg/d, Placebo, Ropinirole 4 mg/d
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 55 Years
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 28, 2018 · Synced Sep 7, 2026, 9:07 AM EDT
Completed Phase 2 Interventional

Neuroimaging and CBD for Opioid Use Disorder

NCT04567784
View directory record Official record
Conditions
Heroin Abuse, Opioid Use Disorder, Substance-Related Disorders, Opioid-Related Disorders
Interventions
Cannabidiol (CBD), Placebo
Drug
Lead sponsor
Yasmin Hurd
Other
Eligibility
18 Years to 65 Years
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 26, 2025 · Synced Sep 7, 2026, 9:07 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Oral Cannabidiol for Opioid Withdrawal

NCT04238754
View directory record Official record
Conditions
Opioid Withdrawal, Opioid Craving, Opioid Use Disorder
Interventions
Epidiolex, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 75 Years
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 28, 2023 · Synced Sep 7, 2026, 9:07 AM EDT
Suspended Phase 2 Interventional

High Cannabidiol Plant Extract (BRC-001) to Improve Aromatase Inhibitor-Induced Arthralgia in Women With Breast Cancer

NCT06538389
View directory record Official record
Conditions
Anatomic Stage 0 Breast Cancer AJCC v8, Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage IIIA Breast Cancer AJCC v8, Breast Adenocarcinoma, Breast Ductal Carcinoma In Situ, Estrogen Receptor-Positive Breast Carcinoma, Progesterone Receptor-Positive Breast Carcinoma
Interventions
Biospecimen Collection, BRC-001, Placebo Administration, Questionnaire Administration
Procedure · Drug · Other
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Sep 7, 2026, 9:07 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Test the Safety and Efficacy of Cannabidiol as a Treatment Intervention for Opioid Relapse

NCT01311778
View directory record Official record
Conditions
Opiate Addiction
Interventions
Cannabidiol, Fentanyl
Drug
Lead sponsor
Hurd,Yasmin, Ph.D.
Individual
Eligibility
21 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 21, 2013 · Synced Sep 7, 2026, 9:07 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Characterization of the Analgesic Effect of CBD in Healthy, Normal Volunteers

NCT02751359
View directory record Official record
Conditions
Pain
Interventions
Cannabidiol, Placebo
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years to 50 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 11, 2021 · Synced Sep 7, 2026, 9:07 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Cannabidiol Pharmacotherapy for Adults With Cannabis Use Disorder

NCT03102918
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
Cannabidiol, Placebo
Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 24, 2019 · Synced Sep 7, 2026, 9:07 AM EDT
Completed Phase 2 Interventional Results available

Dose Ranging Study of Carbidopa-levodopa

NCT03023059
View directory record Official record
Conditions
Age-related Macular Degeneration
Interventions
Carbidopa-Levodopa, 25 Mg-100 Mg Oral Tablet
Drug
Lead sponsor
Snyder, Robert W., M.D., Ph.D., P.C.
Individual
Eligibility
50 Years to 85 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Sep 7, 2026, 9:07 AM EDT
Completed Phase 2 Interventional Results available

Acute and Short-term Effects of Cannabidiol Admin on Cue-induced Craving in Drug-abstinent Heroin Dependent Humans

NCT01605539
View directory record Official record
Conditions
Opiate Addiction
Interventions
Cannabidiol 400, Cannabidiol 800, Control
Drug
Lead sponsor
Hurd,Yasmin, Ph.D.
Individual
Eligibility
21 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 10, 2020 · Synced Sep 7, 2026, 9:07 AM EDT
Recruiting Phase 2 Interventional

Proof of Concept Trial of Cannabis Derivatives in Neuropathic Pain

NCT05351801
View directory record Official record
Conditions
Neuropathic Pain, Peripheral Neuropathic Pain
Interventions
THC (Syndros), CBD (Epidolex), THC + CBD (Nabiximols), Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
21 Years and older
Enrollment
320 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
6
States / cities
San Diego, California • West Los Angeles, California • West Haven, Connecticut + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Sep 7, 2026, 9:07 AM EDT
Recruiting Phase 2 Interventional

Cannabidiol for Reducing Cigarette Use

NCT06218056
View directory record Official record
Conditions
Tobacco Use Disorder, Tobacco Smoking, Tobacco Dependence
Interventions
Cannabidiol (CBD) 800 mg, Placebo
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
North Hollywood, California
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 7, 2026, 9:07 AM EDT
Terminated Phase 4 Interventional Results available

Carbidopa/Levodopa/Entacapone Versus Immediate Release (IR) Carbidopa/Levodopa on Non-motor Symptoms in Patients With Idiopathic Parkinson's Disease and Demonstrating Non-motor Symptoms of Wearing Off

NCT00642356
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Carbidopa/levodopa/entacapone, Immediate release carbidopa/levodopa
Drug
Lead sponsor
Novartis
Industry
Eligibility
30 Years to 85 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
21
States / cities
Phoenix, Arizona • Aliso Viejo, California • Irvine, California + 17 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2011 · Synced Sep 7, 2026, 9:07 AM EDT
Not listed No phase listed Observational

Substance Abuse Pre-Treatment Screening Study

NCT00439049
View directory record Official record
Conditions
Cocaine Abuse, Cocaine Dependence, Opiate Dependence, Alcohol Dependence, Substance Abuse
Interventions
modafinil, d-amphetamine, L-Dopa, Naltrexone
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 60 Years
Enrollment
7,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 19, 2023 · Synced Sep 7, 2026, 9:07 AM EDT
Recruiting Early Phase 1 Interventional

Cannabidiol in Opioid Use Disorder and Chronic Pain

NCT04587791
View directory record Official record
Conditions
Chronic Pain, Opioid Use Disorder
Interventions
400 mg Cannabidiol, 800 mg Cannabidiol, 1200 mg Cannabidiol, Beta carotene oral solution without CBD
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 70 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Sep 7, 2026, 9:07 AM EDT