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Showing 1–24 of 360 matching trials from the live ClinicalTrials.gov search.
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Recruiting Phase 2 Interventional

Cannabidiol and Alcohol Use Disorder Phenotypes

NCT07279558
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
Full-Spectrum Cannabidiol (CBD), Broad-Spectrum Cannabidiol (CBD), Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
21 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Jul 22, 2026, 5:52 AM EDT
Withdrawn Early Phase 1 Interventional Accepts healthy volunteers

Determination of Cannabinoid and Cannabinoid Metabolite Levels in Healthy Volunteers

NCT04997616
View directory record Official record
Conditions
Healthy
Interventions
Happy Lane Hemp Extract/CBD soft gels (25 mg/capsule)
Dietary Supplement
Lead sponsor
University of Arkansas
Other
Eligibility
18 Years to 45 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Jan 4, 2023 · Synced Jul 22, 2026, 5:52 AM EDT
Not listed Phase 2 Interventional

CASCADE: CAnnabidiol Study in Children With Autism Spectrum DisordEr

NCT04520685
View directory record Official record
Conditions
Autism Spectrum Disorder
Interventions
Oral cannabidiol 100mg/mL, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
5 Years to 17 Years
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated May 7, 2024 · Synced Jul 22, 2026, 5:52 AM EDT
Recruiting Phase 3 Interventional

Effects of Cannabidiol (CBD) Versus Placebo as an Adjunct to Treatment in Early Psychosis

NCT04411225
View directory record Official record
Conditions
Early Psychosis
Interventions
Cannabidiol oral solution
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
16 Years to 30 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
2
States / cities
La Jolla, California • San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 7, 2026 · Synced Jul 22, 2026, 5:52 AM EDT
Completed Phase 3 Interventional

A Study to Evaluate Fixed Dose Carbidopa/Levodopa/Entacapone Versus Immediate Release Carbidopa/Levodopa

NCT00134966
View directory record Official record
Conditions
Parkinson's Disease
Interventions
capsules containing: carbidopa (25 mg), levodopa (100 mg), entacapone (200 mg)
Drug
Lead sponsor
Novartis
Industry
Eligibility
30 Years to 80 Years
Enrollment
493 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
17
States / cities
Phoenix, Arizona • La Jolla, California • Reseda, California + 13 more
Source: ClinicalTrials.gov public record
Updated May 16, 2017 · Synced Jul 22, 2026, 5:52 AM EDT
Not listed Phase 2 Interventional

Osteoarthritis of the Knee Pain Study Using a CBD and THC Sublingual Tablet

NCT04195269
View directory record Official record
Conditions
Osteoarthritis, Knee, Pain
Interventions
Test Article
Drug
Lead sponsor
Pure Green
Industry
Eligibility
21 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
West Bloomfield, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 13, 2020 · Synced Jul 22, 2026, 5:52 AM EDT
Completed Phase 2Phase 3 Interventional Results available

The Use of Cannabidiol (CBD) in Pain Reduction and Opioid Use After Shoulder Arthroscopy

NCT04672252
View directory record Official record
Conditions
Pain, Postoperative
Interventions
CBD Oral Disintegrating Tablet (ODT), Placebo ODT
Drug · Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 75 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 6, 2023 · Synced Jul 22, 2026, 5:52 AM EDT
Completed Phase 2 Interventional

12-Week, Double-Blind, Placebo-Controlled Study of 20 and 60 mg/Day Istradefylline in Parkinson's Disease Patients on Levodopa/Carbodopa

NCT00456794
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Istradefylline (KW-6002)
Drug
Lead sponsor
Kyowa Kirin, Inc.
Industry
Eligibility
30 Years and older
Enrollment
325 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2003
U.S. locations
1
States / cities
Princeton, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 24, 2024 · Synced Jul 22, 2026, 5:52 AM EDT
Not listed Phase 1Phase 2 Interventional

Impact of CBD-Rich Oil on Aversive Memory Reconsolidation

NCT04726475
View directory record Official record
Conditions
Anxiety and Fear
Interventions
Interoceptive Aversive Memory Reactivation, Cannabidiol (CBD)-Rich Broad Spectrum Hemp Extract Oil, Placebo Oil
Behavioral · Dietary Supplement
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 65 Years
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jan 18, 2022 · Synced Jul 22, 2026, 5:52 AM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

The CBD-IC Randomized Controlled Trial: Evaluation of Hemp Cannabidiol SuppositoRies for Pain and Urinary SymptOms in INterstitial Cystitis (CHRONIC)

NCT04349930
View directory record Official record
Conditions
Interstitial Cystitis, Bladder Pain Syndrome
Interventions
Cannabidiol vaginal suppository, Placebo vaginal suppository
Drug
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years and older · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Jan 14, 2021 · Synced Jul 22, 2026, 5:52 AM EDT
Completed Phase 1Phase 2 Interventional

An Exploratory Study of XP21279 (With Lodosyn®) and Sinemet® in Parkinson's Disease Subjects

NCT00914602
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Sinemet 25-100 Oral Tablet, XP21279, Carbidopa Pill
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
30 Years to 75 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
2
States / cities
Peoria, Arizona • Bingham Farms, Michigan
Source: ClinicalTrials.gov public record
Updated May 4, 2021 · Synced Jul 22, 2026, 5:52 AM EDT
Completed Phase 1Phase 2 Interventional Results available

A Pilot Trial of Lithium in Subjects With Progressive Supranuclear Palsy or Corticobasal Degeneration

NCT00703677
View directory record Official record
Conditions
Progressive Supranuclear Palsy, Corticobasal Degeneration
Interventions
Lithium
Drug
Lead sponsor
Westat
Other
Eligibility
40 Years to 80 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
8
States / cities
Chicago, Illinois • Louisville, Kentucky • Baltimore, Maryland + 4 more
Source: ClinicalTrials.gov public record
Updated May 16, 2024 · Synced Jul 22, 2026, 5:52 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers

Carbidopa-Levodopa in Dry AMD With Geographic Atrophy

NCT03451500
View directory record Official record
Conditions
Age Related Macular Degeneration
Interventions
carbidopa-levodopa
Drug
Lead sponsor
Snyder, Robert W., M.D., Ph.D., P.C.
Individual
Eligibility
50 Years to 85 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 24, 2024 · Synced Jul 22, 2026, 5:52 AM EDT
Completed Phase 2 Interventional

CBD for the Treatment of Alcohol Use Disorder

NCT04873453
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
Cannabidiol, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
21 Years to 60 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 30, 2024 · Synced Jul 22, 2026, 5:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Cannabidiol Effects on Blood Alcohol Level and Intoxication

NCT06105138
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
200mg Cannabidiol oral solution, 30mg Cannabidiol oral solution, Placebo
Dietary Supplement
Lead sponsor
Colorado State University
Other
Eligibility
21 Years to 60 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 22, 2024 · Synced Jul 22, 2026, 5:52 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

The Effects of Cannabidiol on the Driving Performance of Healthy Adults by Dose and Sex

NCT06686914
View directory record Official record
Conditions
Cannabidiol Effects, Driving Performance
Interventions
Cannabidiol (CBD) Oil 300mg, Cannabidiol (CBD) Oil 150mg, Placebo Oil
Drug
Lead sponsor
West Virginia University
Other
Eligibility
18 Years to 30 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Oct 30, 2025 · Synced Jul 22, 2026, 5:52 AM EDT
Terminated Phase 3 Interventional Results available

Efficacy and Safety of Cannabidiol Oral Solution (GWP42003-P, CBD-OS) in Patients With Rett Syndrome

NCT03848832
View directory record Official record
Conditions
Rett Syndrome, RTT
Interventions
GWP42003-P, Placebo
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
2 Years to 18 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
14
States / cities
Birmingham, Alabama • San Diego, California • Aurora, Colorado + 11 more
Source: ClinicalTrials.gov public record
Updated Sep 1, 2022 · Synced Jul 22, 2026, 5:52 AM EDT
Completed Phase 3 Interventional Results available

A Study to Examine the Effect of Levodopa-Carbidopa Intestinal Gel (LCIG) Therapy Relative to That of Optimized Medical Treatment (OMT) on Non-motor Symptoms (NMS) Associated With Advanced Parkinson's Disease (PD)

NCT02549092
View directory record Official record
Conditions
Advanced Parkinson's Disease
Interventions
Optimized Medical Treatment, Levodopa-Carbidopa Intestinal Gel, Nasojejunal (NJ) tube, Percutaneous endoscopic gastrostomy with a jejunal (PEG-J) tube
Drug · Device
Lead sponsor
AbbVie
Industry
Eligibility
30 Years and older
Enrollment
89 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2022
U.S. locations
8
States / cities
Fountain Valley, California • Boca Raton, Florida • Jacksonville, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Nov 27, 2023 · Synced Jul 22, 2026, 5:52 AM EDT
Completed Phase 3 Interventional Results available

Phase 3 Trial of Cannabidiol (CBD; GWP42003-P) for Infantile Spasms: Open-label Extension Phase (GWPCARE7)

NCT02954887
View directory record Official record
Conditions
Infantile Spasms
Interventions
GWP42003-P
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
1 Month to 24 Months
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
5
States / cities
Little Rock, Arkansas • Winston-Salem, North Carolina • Columbus, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 1, 2022 · Synced Jul 22, 2026, 5:52 AM EDT
Terminated Early Phase 1 Interventional Accepts healthy volunteers

Effects of Cannabis on Cognition and Endocannabinoid Levels in Bipolar Disorder Patients and Healthy Volunteers

NCT04231643
View directory record Official record
Conditions
Bipolar Disorder
Interventions
Dronabinol, Epidiolex, Placebos
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 50 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated May 9, 2024 · Synced Jul 22, 2026, 5:52 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Weight Loss, Blood Sugar and Blood Lipid Effects of Tetrahydrocannabivarin (THCV) Impregnated Mucoadhesive Strips

NCT05574049
View directory record Official record
Conditions
Metabolic Syndrome, Morbid Obesity, Hypercholesterolemia, Hyperglycemia
Interventions
Tetrahydrocannabivarin, Placebo
Drug · Other
Lead sponsor
Medical Life Care Planners, LLC
Other
Eligibility
18 Years to 100 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Clearwater, Florida
Source: ClinicalTrials.gov public record
Updated Oct 9, 2022 · Synced Jul 22, 2026, 5:52 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 Jul 22, 2026, 5:52 AM EDT
Active, not recruiting Early Phase 1 Interventional

Role of CBD in Regulating Meal Time Anxiety in Anorexia Nervosa

NCT04878627
View directory record Official record
Conditions
Anorexia Nervosa
Interventions
Cannabidiol, Placebo
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Sep 1, 2025 · Synced Jul 22, 2026, 5:52 AM EDT
Completed Phase 2 Interventional Results available

Evaluation of BTX 1503 in Patients With Moderate to Severe Acne Vulgaris

NCT03573518
View directory record Official record
Conditions
Acne Vulgaris
Interventions
BTX 1503, Vehicle
Drug
Lead sponsor
Botanix Pharmaceuticals
Industry
Eligibility
12 Years to 40 Years
Enrollment
368 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
25
States / cities
Little Rock, Arkansas • Encino, California • Murrieta, California + 21 more
Source: ClinicalTrials.gov public record
Updated Apr 17, 2022 · Synced Jul 22, 2026, 5:52 AM EDT