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ClinicalTrials.gov public records Last synced Oct 17, 2026, 7:37 AM EDT

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Showing 1–23 of 23 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: GWP42003-P Clear all
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 2, 2022 · Synced Oct 17, 2026, 7:37 AM EDT
Terminated Phase 3 Interventional Results available

Efficacy and Safety of GWP42003-P Oral Solution in Children With Epilepsy With Myoclonic-atonic Seizures

NCT05288283
View directory record Official record
Conditions
Seizures Associated With EMAS
Interventions
GWP42003-P, Placebo
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
1 Year to 18 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
10
States / cities
Birmingham, Alabama • Sacramento, California • Atlanta, Georgia + 7 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2025 · Synced Oct 17, 2026, 7:37 AM EDT
Completed Phase 3 Interventional Results available

A Randomized Controlled Trial of Cannabidiol (GWP42003-P, CBD) for Seizures in Tuberous Sclerosis Complex (GWPCARE6)

NCT02544763
View directory record Official record
Conditions
Tuberous Sclerosis Complex, Seizures
Interventions
GWP42003-P, Placebo
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
1 Year to 65 Years
Enrollment
224 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
23
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Los Angeles, California + 20 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2022 · Synced Oct 17, 2026, 7:37 AM EDT
Completed Phase 1 Interventional

Cannabidiol (CBD) to 27 Patients (Aged 2 Years - 19 Years) With Drug Resistant Epilepsy

NCT02286986
View directory record Official record
Conditions
Epilepsy
Interventions
Cannabidiol
Drug
Lead sponsor
University of Utah
Other
Eligibility
2 Years to 25 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jan 27, 2020 · Synced Oct 17, 2026, 7:37 AM EDT
Terminated Phase 3 Interventional Results available

A Long-term Safety Study of Cannabidiol Oral Solution (GWP42003-P, CBD-OS) in Patients With Rett Syndrome

NCT04252586
View directory record Official record
Conditions
Rett Syndrome, RTT
Interventions
GWP42003-P
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
2 Years to 18 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
14
States / cities
Birmingham, Alabama • La Jolla, California • Aurora, Colorado + 11 more
Source: ClinicalTrials.gov public record
Updated Aug 8, 2022 · Synced Oct 17, 2026, 7:37 AM EDT
Completed Phase 3 Interventional Results available

An Open-label Extension Trial of Cannabidiol (GWP42003-P, CBD) for Seizures in Tuberous Sclerosis Complex (GWPCARE6)

NCT02544750
View directory record Official record
Conditions
Tuberous Sclerosis Complex, Seizures
Interventions
GWP42003-P
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
1 Year to 65 Years
Enrollment
199 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 14, 2022 · Synced Oct 17, 2026, 7:37 AM EDT
Completed Phase 2 Interventional Results available

A Study of Tolerability and Efficacy of Cannabidiol on Tremor in Parkinson's Disease

NCT02818777
View directory record Official record
Conditions
Parkinson's Disease
Interventions
cannabidiol
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
40 Years to 80 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 19, 2019 · Synced Oct 17, 2026, 7:37 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 2, 2022 · Synced Oct 17, 2026, 7:37 AM EDT
Completed Phase 2 Interventional Results available

Trial to Investigate the Safety and Efficacy of Cannabidiol Oral Solution (GWP42003-P; CBD-OS) in Children and Adolescents With Autism Spectrum Disorder

NCT04745026
View directory record Official record
Conditions
Autism Spectrum Disorder
Interventions
GWP42003-P, Placebo
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
6 Years to 17 Years
Enrollment
103 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
12
States / cities
Phoenix, Arizona • La Jolla, California • Los Angeles, California + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 30, 2025 · Synced Oct 17, 2026, 7:37 AM EDT
Completed Phase 4 Interventional

A Study to Investigate Behavioral and Other Co-Occurring Outcomes With Epidiolex as Add-On Therapy in Participants Aged 1 to 65 Years of Age With Tuberous Sclerosis Complex

NCT05864846
View directory record Official record
Conditions
Tuberous Sclerosis Complex Associated Neuropsychiatric Disease
Interventions
Cannabidiol Oral Solution [Epidiolex]
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
1 Year to 65 Years
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
12
States / cities
Aurora, Colorado • New Haven, Connecticut • Gainesville, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Oct 17, 2026, 7:37 AM EDT
Completed Phase 2 Interventional Results available

Topical Cannabidiol for the Treatment of Chemotherapy-Induced Peripheral Neuropathy

NCT05388058
View directory record Official record
Conditions
Chemotherapy-Induced Peripheral Neuropathy, Malignant Solid Neoplasm
Interventions
Cannabidiol, Placebo Administration, Quality-of-Life Assessment, Questionnaire Administration
Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
9
States / cities
Albert Lea, Minnesota • Grand Rapids, Minnesota • Hibbing, Minnesota + 6 more
Source: ClinicalTrials.gov public record
Updated Jan 16, 2026 · Synced Oct 17, 2026, 7:37 AM EDT
Completed Phase 3 Interventional Results available

Trial of Cannabidiol (CBD; GWP42003-P) for Infantile Spasms (GWPCARE7)

NCT02953548
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 – 2018
U.S. locations
6
States / cities
Little Rock, Arkansas • Winston-Salem, North Carolina • Columbus, Ohio + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2022 · Synced Oct 17, 2026, 7:37 AM EDT
Terminated Phase 2 Interventional Results available

Trial to Investigate the Safety and Efficacy of GWP42003-P Versus Placebo as Adjunctive Therapy in Participants With Schizophrenia Experiencing Inadequate Response to Ongoing Antipsychotic Treatment

NCT04421456
View directory record Official record
Conditions
Schizophrenia
Interventions
GWP42003-P, Placebo
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
18 Years to 55 Years
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
19
States / cities
Bentonville, Arkansas • Little Rock, Arkansas • Garden Grove, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jun 15, 2023 · Synced Oct 17, 2026, 7:37 AM EDT
Completed Phase 3 Interventional Results available

Antiepileptic Efficacy Study of GWP42003-P in Children and Young Adults With Dravet Syndrome (GWPCARE1)

NCT02091375
View directory record Official record
Conditions
Epilepsy, Dravet Syndrome
Interventions
GWP42003-P 20 mg/kg/day Dose, Placebo control
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
2 Years to 18 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
13
States / cities
Miami, Florida • Orlando, Florida • Atlanta, Georgia + 10 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2022 · Synced Oct 17, 2026, 7:37 AM EDT
Completed Phase 2 Interventional Results available

A Dose-ranging Pharmacokinetics and Safety Study of GWP42003-P in Children With Dravet Syndrome (GWPCARE1)

NCT02091206
View directory record Official record
Conditions
Epilepsy, Dravet Syndrome
Interventions
GWP42003-P 5 mg/kg/day Dose, Placebo control, GWP42003-P 10 mg/kg/day Dose, GWP42003-P 20 mg/kg/day Dose
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
4 Years to 10 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
8
States / cities
Miami, Florida • Atlanta, Georgia • Chicago, Illinois + 5 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2022 · Synced Oct 17, 2026, 7:37 AM EDT
Recruiting Phase 1 Interventional

A Study to Evaluate the Efficacy and Safety of Cannabidiol Oral Solution (CBD-OS [GWP42003-P, JZP926]) for the Treatment of Focal-Onset Seizures

NCT07233239
View directory record Official record
Conditions
Focal Seizures
Interventions
CBD-OS
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
12 Years to 75 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
24
States / cities
Phoenix, Arizona • La Jolla, California • New Haven, Connecticut + 20 more
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 17, 2026, 7:37 AM EDT
Completed Phase 3 Interventional Results available

GWPCARE2 A Study to Investigate the Efficacy and Safety of Cannabidiol (GWP42003-P) in Children and Young Adults With Dravet Syndrome

NCT02224703
View directory record Official record
Conditions
Epilepsy, Dravet Syndrome
Interventions
GWP42003-P, Placebo Control
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
2 Years to 18 Years
Enrollment
199 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
23
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Los Angeles, California + 20 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2022 · Synced Oct 17, 2026, 7:37 AM EDT
Completed Phase 3 Interventional Results available

A Study to Investigate the Efficacy and Safety of Cannabidiol (GWP42003-P; CBD) as Adjunctive Treatment for Seizures Associated With Lennox-Gastaut Syndrome in Children and Adults

NCT02224690
View directory record Official record
Conditions
Epilepsy, Lennox-Gastaut Syndrome
Interventions
GWP42003-P 20 mg/kg/day Dose, Placebo
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
2 Years to 55 Years
Enrollment
171 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
17
States / cities
Tampa, Florida • Atlanta, Georgia • Chicago, Illinois + 14 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2022 · Synced Oct 17, 2026, 7:37 AM EDT
Recruiting Phase 2 Interventional

Phytocannabinoids for Reducing Chronic Chemotherapy-Induced Peripheral Neuropathy in Breast and Colon Cancer Survivors

NCT06731894
View directory record Official record
Conditions
Breast Carcinoma, Chemotherapy-Induced Peripheral Neuropathy, Colon Carcinoma
Interventions
Biospecimen Collection, Cannabidiol, Dronabinol, Placebo Administration, Survey Administration
Procedure · Drug · Other
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
2
States / cities
Duarte, California • Irvine, California
Source: ClinicalTrials.gov public record
Updated Dec 5, 2025 · Synced Oct 17, 2026, 7:37 AM EDT
Available No phase listed Expanded access

Epidiolex and Drug Resistant Epilepsy in Children

NCT02397863
View directory record Official record
Conditions
Epilepsy
Interventions
Cannabidiol (Epidiolex)
Drug
Lead sponsor
Augusta University
Other
Eligibility
1 Year to 18 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 24, 2015 · Synced Oct 17, 2026, 7:37 AM EDT
Terminated Phase 3 Interventional Results available

Assessment of Adjunctive Cannabidiol Oral Solution (GWP42003-P) in Children With Tuberous Sclerosis Complex (TSC), Dravet Syndrome (DS), or Lennox-Gastaut Syndrome (LGS) Who Experience Inadequately-controlled Seizures

NCT04485104
View directory record Official record
Conditions
Seizure in Participants With Tuberous Sclerosis Complex, Seizure in Participants With Dravet Syndrome, Seizure in Participants With Lennox-Gastaut Syndrome
Interventions
GWP42003-P
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
1 Month to 23 Months
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
6
States / cities
Little Rock, Arkansas • Los Angeles, California • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2025 · Synced Oct 17, 2026, 7:37 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of GWP42003-P for Seizures Associated With Lennox-Gastaut Syndrome in Children and Adults

NCT02224560
View directory record Official record
Conditions
Epilepsy, Lennox Gastaut Syndrome
Interventions
GWP42003-P, Placebo control
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
2 Years to 55 Years
Enrollment
225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
20
States / cities
Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 16 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2022 · Synced Oct 17, 2026, 7:37 AM EDT
Withdrawn Early Phase 1 Interventional

Phytocannabinoids for the Treatment of Chronic Chemotherapy-Induced Peripheral Neuropathy in Breast and Colon Cancer Survivors

NCT05672342
View directory record Official record
Conditions
Breast Carcinoma, Chemotherapy-Induced Peripheral Neuropathy, Colon Carcinoma
Interventions
Cannabidiol, Delta-8-Tetrahydrocannabinol, Placebo Administration, Questionnaire Administration
Drug · Other
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Aug 9, 2024 · Synced Oct 17, 2026, 7:37 AM EDT